Dyfyniad APA

Trochim, W. M. K. (2001). Research methods knowledge base (2nd ed.). Cornell University Pub., Cornell University Campus Store.

Dyfyniad Arddull Chicago

Trochim, William M. K. Research Methods Knowledge Base. 2nd ed. Ithaca, N.Y: Cornell University Pub., Cornell University Campus Store, 2001.

Dyfyniad MLA

Trochim, William M. K. Research Methods Knowledge Base. 2nd ed. Cornell University Pub., Cornell University Campus Store, 2001.

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