APA aipamena

Jackson, N., & Penn, P. Dictionary of natural resources and their principal uses/2nd ed (2nd ed.).

Chicago Style aipamena

Jackson, Nora, and Philip Penn. Dictionary of Natural Resources and Their Principal Uses/2nd Ed. 2nd ed.

MLA aipamena

Jackson, Nora, and Philip Penn. Dictionary of Natural Resources and Their Principal Uses/2nd Ed. 2nd ed.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.