Cite
HARLAN BARROWS AND ENVIRONMENTALISM.
MLA
Chappell Jr., John E. “Harlan Barrows and Environmentalism.” Annals of the Association of American Geographers, vol. 61, no. 1, Mar. 1971, pp. 198–201. EBSCOhost, https://doi.org/10.1111/j.1467-8306.1971.tb00773.x.
APA
Chappell Jr., J. E. (1971). Harlan Barrows and Environmentalism. Annals of the Association of American Geographers, 61(1), 198–201. https://doi.org/10.1111/j.1467-8306.1971.tb00773.x
Chicago
Chappell Jr., John E. 1971. “Harlan Barrows and Environmentalism.” Annals of the Association of American Geographers 61 (1): 198–201. doi:10.1111/j.1467-8306.1971.tb00773.x.