APA (7th ed.) Citation

GUTHERIE. JR, A. B. The big sky. Pocket Books.

Chicago Style (17th ed.) Citation

GUTHERIE. JR, A. B. The Big Sky. Pocket Books.

MLA (8th ed.) Citation

GUTHERIE. JR, A. B. The Big Sky. Pocket Books.

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