APA (7th ed.) Citation

Blaustein, J., & Abbey, E. (1977). The hidden canyon: A river journey. Penguin Books.

Chicago Style (17th ed.) Citation

Blaustein, John, and Edward Abbey. The Hidden Canyon: A River Journey. New York: Penguin Books, 1977.

MLA (9th ed.) Citation

Blaustein, John, and Edward Abbey. The Hidden Canyon: A River Journey. Penguin Books, 1977.