Dyfyniad APA

Small, J. (1954). Modern aspects of ph: With special reference of plants and soils. New York: D. Van Nostrand.

Dyfyniad Arddull Chicago

Small, James. Modern Aspects of Ph: With Special Reference of Plants and Soils. New York: D. Van Nostrand, 1954.

Dyfyniad MLA

Small, James. Modern Aspects of Ph: With Special Reference of Plants and Soils. New York: D. Van Nostrand, 1954.

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