APA (7th ed.) Citation

Zahm, J. A. Up the Orinoco and down the Magdalena.

Chicago Style (17th ed.) Citation

Zahm, J. A. Up the Orinoco and Down the Magdalena.

MLA (9th ed.) Citation

Zahm, J. A. Up the Orinoco and Down the Magdalena.

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