FYS: Classics/Theatre197: Great (and not so great) Greek Tragedies (2019): How do I understand a reference entry in Brill's or the OCD?

Brill's New Pauly: Encyclopaedia of the Ancient World  (HU-Reference DE5 .N3513 2006)

Themisto (Θεμστώ; Themistṓ).

[1] Daughter of Lapith → Hypseus, third wife of  → Athamas (Herodoros 3I F 38 FGrh; Apollod. I, 84; Ath. 13,560d; Nonn. Dion. 9,305-307; Tzetz. Lykophr. 22), who is the father of her several children.  Her predecessors were → Nephele [I] and Ino. When the latter returns, T., tries to kill her children (Hyg. Fab. 4,239, otherwise in Fab. I).  By means of change of clothing Ino causes T.  to kill her own children, whereupon T. takes her own life.
[2] Daughter of → Inachus [I], by → Zeus the mother of → Arcas and ancestor of the Arcadians (Istros 334 F 75 FGrH).

Th. Ganshow, s. v. Leukonoe, LIMC 6.I, 272;
A. Lesky, s. v. T. (I-2), RE ₅ A, 1680-1683.     R. HA.

The Oxford Classical Dictionary (HU-Reference DE5 .O9 2012)

Themisto, name of several heroines, the only one of importance being the daughter of Hypseus (Nonnus, Dion. 9. 305 f.), wife of *Anthamas.  Herodorus, in schol. Ap. Rhod. 2. 1144, makes her his first wife and mother of several childrens including Phrixus and Helle.

            See Hofer in Röscher; Themisto'.                    HJR

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Remember that each reference book has a list of abbreviations at the front of the book to help you decode the entry.  In Brill's New Pauly this begins on page XI and includes a list of general abbreviations, bibliographic abbreviations, ancient authors/works, and a list of contributing authors to the encyclopaedia.  NOTE:  There is no list of bibliographic abbreviations or ancient authors in volumes 2, 4, 5, & 6 - you will need to look at the beginning of another volume to find that information!

In the Oxford Classical Dictionary this begins on page XVII with an index to the initials of the contributors and continues with a list of abbreviations that includes the ancient authors/works.  

Anytime you scan or copy pages from a larger volume (think: reference entry, chapter from a book, etc) ALWAYS:

• Copy the TITLE PAGE: this gives you information you will need to create a citation