Cita APA

Park , C. F. (1973). Earth resources. Washington, D.C: Voice of American.

Chicago Style Citation

Park , Charles F. Earth Resources. Washington, D.C: Voice of American, 1973.

Cita MLA

Park , Charles F. Earth Resources. Washington, D.C: Voice of American, 1973.

Atenció: Aquestes cites poden no estar 100% correctes.