Dyfyniad APA

RATAN, L. (1990). SOIL EROSION IN THE TROPICS: PRINCIPLES AND MANAGEMENT. MCGRAW HILL BOOK CO.

Dyfyniad Arddull Chicago

RATAN, LAL. SOIL EROSION IN THE TROPICS: PRINCIPLES AND MANAGEMENT. NEW-YORK: MCGRAW HILL BOOK CO, 1990.

Dyfyniad MLA

RATAN, LAL. SOIL EROSION IN THE TROPICS: PRINCIPLES AND MANAGEMENT. MCGRAW HILL BOOK CO, 1990.

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