APA (7th ed.) Citation

Ullman, J. R., & Eggenhofer, N. (1960). Down the Colorado with Major Powell. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Ullman, James Ramsey, and Nicholas Eggenhofer. Down the Colorado with Major Powell. Boston: Houghton Mifflin, 1960.

MLA (9th ed.) Citation

Ullman, James Ramsey, and Nicholas Eggenhofer. Down the Colorado with Major Powell. Houghton Mifflin, 1960.

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