APA استشهاد

Ellis, H. S. (1948). survey of contemporary economics. Richard D. Irwin.

استشهاد بنمط شيكاغو

Ellis, Haward S. Survey of Contemporary Economics. Illinois: Richard D. Irwin, 1948.

MLA استشهاد

Ellis, Haward S. Survey of Contemporary Economics. Richard D. Irwin, 1948.