Dyfyniad APA

METCALF, C. (1962). Destructive And Useful Insects. McGraw-Hill.

Dyfyniad Arddull Chicago

METCALF, C.L. Destructive And Useful Insects. McGraw-Hill, 1962.

Dyfyniad MLA

METCALF, C.L. Destructive And Useful Insects. McGraw-Hill, 1962.

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