Dyfyniad APA

CRAVENS, R. H. (1977). PESTS AND DISEASES. Virginia, Time-life Books.

Dyfyniad Arddull Chicago

CRAVENS, RICHARD H. PESTS AND DISEASES. Virginia, Time-life Books, 1977.

Dyfyniad MLA

CRAVENS, RICHARD H. PESTS AND DISEASES. Virginia, Time-life Books, 1977.

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