Dyfyniad APA

Gill, K. (1986). International research centers directory (3rd ed.). Gale Research.

Dyfyniad Arddull Chicago

Gill, Kay. International Research Centers Directory. 3rd ed. Detroit, MI: Gale Research, 1986.

Dyfyniad MLA

Gill, Kay. International Research Centers Directory. 3rd ed. Gale Research, 1986.

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