Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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