Dyfyniad APA

Singh, R. A. (1989). Soil physical analysis (2nd ed.). Kalyani Publishers.

Dyfyniad Arddull Chicago

Singh, R. A. Soil Physical Analysis. 2nd ed. New Delhi: Kalyani Publishers, 1989.

Dyfyniad MLA

Singh, R. A. Soil Physical Analysis. 2nd ed. Kalyani Publishers, 1989.

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