Dyfyniad APA

Gustafson, A. F. (2003). Handbook of fertilizers: Their source, make-up, effect and use. Agrobios (India).

Dyfyniad Arddull Chicago

Gustafson, A. F. Handbook of Fertilizers: Their Source, Make-up, Effect and Use. Jodhour: Agrobios (India), 2003.

Dyfyniad MLA

Gustafson, A. F. Handbook of Fertilizers: Their Source, Make-up, Effect and Use. Agrobios (India), 2003.

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