APA (7th ed.) Citation

Bird, I. L. (1990). A lady's life in the Rocky Mountains. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bird, Isabella Lucy. A Lady's Life in the Rocky Mountains. Champaign, Ill: Project Gutenberg, 1990.

MLA (9th ed.) Citation

Bird, Isabella Lucy. A Lady's Life in the Rocky Mountains. Project Gutenberg, 1990.