Dyfyniad APA

Dwivedi, A., & Gupta, G. (1993). Afforestation of arid lands. Scientific.

Dyfyniad Arddull Chicago

Dwivedi, A.P, and G.N Gupta. Afforestation of Arid Lands. Jodhpur: Scientific, 1993.

Dyfyniad MLA

Dwivedi, A.P, and G.N Gupta. Afforestation of Arid Lands. Scientific, 1993.

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