APA (7th ed.) Citation

Perry, J., & Perry, J. G. (1988). The Sierra Club guide to the natural areas of Idaho, Montana, and Wyoming. Sierra Club Books.

Chicago Style (17th ed.) Citation

Perry, John, and Jane Greverus Perry. The Sierra Club Guide to the Natural Areas of Idaho, Montana, and Wyoming. San Francisco: Sierra Club Books, 1988.

MLA (8th ed.) Citation

Perry, John, and Jane Greverus Perry. The Sierra Club Guide to the Natural Areas of Idaho, Montana, and Wyoming. Sierra Club Books, 1988.

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