Q. How do I cite my custom textbook?

How do I cite this book for my class?: GBA 498
ok, what book, the textbook?: Strategic Management GBA 498: Saint Leo University, College of Business, Custom Edition
based on Thompson, Peteraf, Gamble and Strickland. McGraw Hill 22 edition

https://libguides.jcu.edu.au/apa/class-material/custom-textbooks     EXAMPLE

Also, (John Harding, Saint Leo writing professor, advised to consult the APA Style blog expert) And the APA style expert at APA Style Blog adds…

https://apastyle.apa.org/style-grammar-guidelines/references/examples/classroom-course-references

Also note that a book of limited distribution can still be formatted like a book, whether it is authored or edited.

https://apastyle.apa.org/style-grammar-guidelines/references/examples/book-references

If the James Cook University example works for your specific situation, it looks good to me. My only adjustment would be that if the compilers (in the case of the example reference, Ware and Harrison-Hill) are the instructors for the class, I'd follow the advice in the custom course pack example link above and change "Comps." to "Eds." ("Comp." is not a standard abbreviation, so in the event that "Compilers" was the only role title provided in the book for Ware and Harrison-Hill and they are not the instructors, I'd write out "Compilers.")