APA (7th ed.) Citation

Sharp, R. P., & Malin, M. C. (1975). Channels on Mars. Geological Society of America Bulletin, 86, 593.

Chicago Style (17th ed.) Citation

Sharp, R. P., and M. C. Malin. "Channels on Mars." Geological Society of America Bulletin 86 (1975): 593.

MLA (9th ed.) Citation

Sharp, R. P., and M. C. Malin. "Channels on Mars." Geological Society of America Bulletin, vol. 86, 1975, p. 593.