Cita APA (7th ed.)
Crabtree, J. (1982). Basic principles of effective teaching. Standard Pub..
Cita Chicago (17th ed.)
Crabtree, June. Basic Principles of Effective Teaching. Cincinnati, Ohio: Standard Pub., 1982.
Cita MLA (9th ed.)
Crabtree, June. Basic Principles of Effective Teaching. Standard Pub., 1982.
Atenció: Aquestes cites poden no estar 100% correctes.