APA (7th ed.) Citation

Robinson, W. J., Harrill, B. G., & Warren, R. L. (1975). Tree-ring dates from Arizona H-I, Flagstaff area. Laboratory of Tree-Ring Research, University of Arizona.

Chicago Style (17th ed.) Citation

Robinson, William James, Bruce G. Harrill, and Richard Lee Warren. Tree-ring Dates from Arizona H-I, Flagstaff Area. Tucson: Laboratory of Tree-Ring Research, University of Arizona, 1975.

MLA (9th ed.) Citation

Robinson, William James, et al. Tree-ring Dates from Arizona H-I, Flagstaff Area. Laboratory of Tree-Ring Research, University of Arizona, 1975.