Mangham, S. (1939). Earth's green mantle.
Chicago Style aipamenaMangham, Sydney. Earth's Green Mantle. 1939.
MLA aipamenaMangham, Sydney. Earth's Green Mantle. 1939.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
Mangham, S. (1939). Earth's green mantle.
Chicago Style aipamenaMangham, Sydney. Earth's Green Mantle. 1939.
MLA aipamenaMangham, Sydney. Earth's Green Mantle. 1939.