APA Citation

Schreider, H., & Schreider, F. (1970). Exploring the Amazon. Washington: National Geographic Society.

Chicago Style Citation

Schreider, Helen, and Frank Schreider. Exploring the Amazon. Washington: National Geographic Society, 1970.

MLA Citation

Schreider, Helen, and Frank Schreider. Exploring the Amazon. Washington: National Geographic Society, 1970.

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