APA引文

Courant, R. a. R. H. (1946). What is mathematics? Oxford University.

Chicago Style (17th ed.) Citation

Courant, Richard and Robbins Herbert. What Is Mathematics? Oxford University, 1946.

MLA引文

Courant, Richard and Robbins Herbert. What Is Mathematics? Oxford University, 1946.

警告：這些引文格式不一定是100％准確.