Dyfyniad APA

Rasmussen, F. A., Holobinko, P., & Showalter, V. M. (1971). Man and the environment (Teacher's ed.). Houghton Mifflin.

Dyfyniad Arddull Chicago

Rasmussen, Frederick A., Paul Holobinko, and Victor M. Showalter. Man and the Environment. Teacher's ed. Boston: Houghton Mifflin, 1971.

Dyfyniad MLA

Rasmussen, Frederick A., et al. Man and the Environment. Teacher's ed. Houghton Mifflin, 1971.

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