APA (6th ed) - I can give you the link to the guide that the uni provides but there’s alot of info on it - so here is the section referring to referencing of Study Guides.
Type Examples
| Introductory and study books |
EDC1400 Foundations of curriculum and pedagogy: Introductory book. (2011). Toowoomba: University of Southern Queensland. PSY2030 Developmental psychology: Study book. (2011). Toowoomba: University of Southern Queensland. |