APA (7th ed.) Citation

Grinnell, G. B. Jack, the Young Ranchman: A Boy's Adventures in the Rockies.

Chicago Style (17th ed.) Citation

Grinnell, George Bird. Jack, the Young Ranchman: A Boy's Adventures in the Rockies.

MLA (9th ed.) Citation

Grinnell, George Bird. Jack, the Young Ranchman: A Boy's Adventures in the Rockies.

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