Dyfyniad APA

Morgan, S., & Morgan, A. (1993). Using light. Facts on File.

Dyfyniad Arddull Chicago

Morgan, Sally, and Adrian Morgan. Using Light. New York: Facts on File, 1993.

Dyfyniad MLA

Morgan, Sally, and Adrian Morgan. Using Light. Facts on File, 1993.

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