APA引文

(1967). The Harper encyclopedia of science. Washington, D.C: Harper and Row.

Trích dẫn kiểu Chicago

The Harper Encyclopedia of Science. Washington, D.C: Harper and Row, 1967.

MLA引文

The Harper Encyclopedia of Science. Washington, D.C: Harper and Row, 1967.

警告：這些引文格式不一定是100％准確.