APA引文

Bullard, O. (1968). Crisis on the Columbia ([1st ed.].). Touchstone Press.

Chicago Style (17th ed.) Citation

Bullard, Oral. Crisis on the Columbia. [1st ed.]. Portland, Or.: Touchstone Press, 1968.

MLA引文

Bullard, Oral. Crisis on the Columbia. [1st ed.]. Touchstone Press, 1968.

警告：這些引文格式不一定是100％准確.