Dyfyniad APA

Enger, E. D., & Ross, F. C. (2007). Laboratory manual concepts in biology (20th edición.). McGraw-Hill.

Dyfyniad Arddull Chicago

Enger, Eldon D., and Frederick C. Ross. Laboratory Manual Concepts in Biology. 20th edición. Boston, MA: McGraw-Hill, 2007.

Dyfyniad MLA

Enger, Eldon D., and Frederick C. Ross. Laboratory Manual Concepts in Biology. 20th edición. McGraw-Hill, 2007.

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