Dyfyniad APA

(1989). Biomass yields and geography of large marien ecosystems. Washington: Westview Press.

Dyfyniad Arddull Chicago

Biomass Yields and Geography of Large Marien Ecosystems. Washington: Westview Press, 1989.

Dyfyniad MLA

Biomass Yields and Geography of Large Marien Ecosystems. Washington: Westview Press, 1989.

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