Dyfyniad APA

(1989). Environmental crisis in Africa: Scientific response. Academy science.

Dyfyniad Arddull Chicago

Environmental Crisis in Africa: Scientific Response. Nairobi: Academy science, 1989.

Dyfyniad MLA

Environmental Crisis in Africa: Scientific Response. Academy science, 1989.

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