Dyfyniad APA

National Fertilizer Development Centre (Pakistan). Planning and Development Division. (1992). Annual fertilizer review. National Fertilizer Development Centre, Planning and Development Division, Govt. of Pakistan.

Dyfyniad Arddull Chicago

National Fertilizer Development Centre (Pakistan). Planning and Development Division. Annual Fertilizer Review. Islamabad: National Fertilizer Development Centre, Planning and Development Division, Govt. of Pakistan, 1992.

Dyfyniad MLA

National Fertilizer Development Centre (Pakistan). Planning and Development Division. Annual Fertilizer Review. National Fertilizer Development Centre, Planning and Development Division, Govt. of Pakistan, 1992.

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