Dyfyniad APA

American Economic Association, Ellis, H. S., & Haley, B. F. (1948). A survey of contemporary economics. Irwin for the American Economic Association.

Dyfyniad Arddull Chicago

American Economic Association, Howard S. Ellis, and Bernard Francis Haley. A Survey of Contemporary Economics. Homewood, Ill.: Irwin for the American Economic Association, 1948.

Dyfyniad MLA

American Economic Association, et al. A Survey of Contemporary Economics. Irwin for the American Economic Association, 1948.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.