APA استشهاد

Owens, R. N. (1954). Introduction to business policy. Richard D Irwin.

استشهاد بنمط شيكاغو

Owens, Richard N. Introduction to Business Policy. Illinois: Richard D Irwin, 1954.

MLA استشهاد

Owens, Richard N. Introduction to Business Policy. Richard D Irwin, 1954.