Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

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