APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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