Dyfyniad APA

Krebs, C. (1994). Ecology: : the experimental analysis of distribution and abundance (4th ed.). Harper Collins.

Dyfyniad Arddull Chicago

Krebs, Charles. Ecology: : The Experimental Analysis of Distribution and Abundance. 4th ed. California: Harper Collins, 1994.

Dyfyniad MLA

Krebs, Charles. Ecology: : The Experimental Analysis of Distribution and Abundance. 4th ed. Harper Collins, 1994.

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