Dyfyniad APA

(1971). encyclopaedia of natural history and ecology: Forest and meadow life. HS Stuttman.

Dyfyniad Arddull Chicago

Encyclopaedia of Natural History and Ecology: Forest and Meadow Life. New York: HS Stuttman, 1971.

Dyfyniad MLA

Encyclopaedia of Natural History and Ecology: Forest and Meadow Life. HS Stuttman, 1971.

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