APA引文

Ulmer, M. (1965). Economics: Theory and Practice (2nd ed.). Houghton Mifflin.

Chicago Edition Citation

Ulmer, Melville. Economics: Theory and Practice. 2nd ed. Boston: Houghton Mifflin, 1965.

MLA引文

Ulmer, Melville. Economics: Theory and Practice. 2nd ed. Houghton Mifflin, 1965.

警告：這些引文格式不一定是100％准確.