APA引文

Lutgens, K. F., & Tarbuck, E. J. (1989). Essentials of geology/3rd ed (3rd ed.). Merrill.

Chicago Edition Citation

Lutgens, K. Frederick, and Edward J. Tarbuck. Essentials of Geology/3rd Ed. 3rd ed. London: Merrill, 1989.

MLA引文

Lutgens, K. Frederick, and Edward J. Tarbuck. Essentials of Geology/3rd Ed. 3rd ed. Merrill, 1989.

警告：這些引文格式不一定是100％准確.