APA引文

Elderton , W. P. J. (1969). Systems of frequency curves.

Chicago Edition Citation

Elderton , William Palin; Johnson. Systems of Frequency Curves. CambridgeUniversity Press, Cambridge, 1969.

MLA引文

Elderton , William Palin; Johnson. Systems of Frequency Curves. 1969.

警告：這些引文格式不一定是100％准確.