APA (7th ed.) Citation

Kirk, R., & Kirk, L. (1972). Exploring Yellowstone. Univ. of Washington Press.

Chicago Style (17th ed.) Citation

Kirk, Ruth, and Louis Kirk. Exploring Yellowstone. Seattle [u.a.]: Univ. of Washington Press, 1972.

MLA (9th ed.) Citation

Kirk, Ruth, and Louis Kirk. Exploring Yellowstone. Univ. of Washington Press, 1972.

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