APA (7th ed.) Citation

Lystrup, H. T. (1971). Yellowstone National Park. Hamilton Stores.

Chicago Style (17th ed.) Citation

Lystrup, Herbert T. Yellowstone National Park. West Yellowstone, Mont.: Hamilton Stores, 1971.

MLA (9th ed.) Citation

Lystrup, Herbert T. Yellowstone National Park. Hamilton Stores, 1971.