APA (7th ed.) Citation

Barrows, E., Shope, I., & Merriam, H. G. (1929). Historic (and) romantic map of Montana. H.G. Merriam.

Chicago Style (17th ed.) Citation

Barrows, Eileen, Irvin Shope, and H. G. Merriam. Historic (and) Romantic Map of Montana. [Missoula, Mont.]: H.G. Merriam, 1929.

MLA (8th ed.) Citation

Barrows, Eileen, et al. Historic (and) Romantic Map of Montana. H.G. Merriam, 1929.

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