Dyfyniad APA

Balay, R., Carrington, V. F., & Martin, M. S. (1996). Guide to reference books (11th ed.). American Library Association.

Dyfyniad Arddull Chicago

Balay, Robert, Vee Friesner Carrington, and Murray S. Martin. Guide to Reference Books. 11th ed. Chicago: American Library Association, 1996.

Dyfyniad MLA

Balay, Robert, et al. Guide to Reference Books. 11th ed. American Library Association, 1996.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.