APA استشهاد

Harald, Jensen, Earl O Heady, & O Earl. (1954). Farm Management Economics. Englewood Cliff.

استشهاد بنمط شيكاغو

Harald, Jensen, Earl O Heady, و O Earl. Farm Management Economics. Englewood Cliff, 1954.

MLA استشهاد

Harald, et al. Farm Management Economics. Englewood Cliff, 1954.