Dyfyniad APA

Berry, D. M., & Martin, G. P. (1972). Guide to writing research papers. Mc Graw Hill.

Dyfyniad Arddull Chicago

Berry, Dorothea M., and G. P. Martin. Guide to Writing Research Papers. New York: Mc Graw Hill, 1972.

Dyfyniad MLA

Berry, Dorothea M., and G. P. Martin. Guide to Writing Research Papers. Mc Graw Hill, 1972.

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