APA Citation

Contor, R. J. (1963). The underworld of Oregon caves national monument. Oregon: Crater Lake Natural.

Chicago Style Citation

Contor, Roger J. The Underworld of Oregon Caves National Monument. Oregon: Crater Lake Natural, 1963.

MLA Citation

Contor, Roger J. The Underworld of Oregon Caves National Monument. Oregon: Crater Lake Natural, 1963.

Warning: These citations may not always be 100% accurate.