APA引文

Wallen, R. N. (1992). Introduction to physical geography. WM C. Brown.

Chicago Style (17th ed.) Citation

Wallen, Robert N. Introduction to Physical Geography. Boulevard: WM C. Brown, 1992.

MLA引文

Wallen, Robert N. Introduction to Physical Geography. WM C. Brown, 1992.

警告：這些引文格式不一定是100％准確.