Dyfyniad APA
Enger, E. D., & Ross, F. C. (2012). Laboratory manual: Concepts in biology (13th ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Enger, Eldon D., and Frederick C. Ross. Laboratory Manual: Concepts in Biology. 13th ed. New York: McGraw-Hill, 2012.
Dyfyniad MLA
Enger, Eldon D., and Frederick C. Ross. Laboratory Manual: Concepts in Biology. 13th ed. McGraw-Hill, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.