APA引文

Bryant, B. (1979). Geology of the Aspen 15-minute quadrangle, Pitkin and Gunnison Counties, Colorado. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Bryant, Bruce. Geology of the Aspen 15-minute Quadrangle, Pitkin and Gunnison Counties, Colorado. Washington: U.S. Govt. Print. Off, 1979.

MLA引文

Bryant, Bruce. Geology of the Aspen 15-minute Quadrangle, Pitkin and Gunnison Counties, Colorado. U.S. Govt. Print. Off, 1979.