Dyfyniad APA
Crabtree, J. (1982). Basic principles of effective teaching. Standard Pub..
Dyfyniad Arddull Chicago
Crabtree, June. Basic Principles of Effective Teaching. Cincinnati, Ohio: Standard Pub., 1982.
Dyfyniad MLA
Crabtree, June. Basic Principles of Effective Teaching. Standard Pub., 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.