APA (7th ed.) Citation

Allen, H. B. (1841). A poetical geognosy. C.C. Little and J. Brown.

Chicago Style (17th ed.) Citation

Allen, H. B. A Poetical Geognosy. Boston: C.C. Little and J. Brown, 1841.

MLA (9th ed.) Citation

Allen, H. B. A Poetical Geognosy. C.C. Little and J. Brown, 1841.