APA استشهاد

Keith, L. A., & Gubellini, C. E. (1958). Business management. MC Graw Hill.

استشهاد بنمط شيكاغو

Keith, Lyman A., و Carlo E. Gubellini. Business Management. London: MC Graw Hill, 1958.

MLA استشهاد

Keith, Lyman A., و Carlo E. Gubellini. Business Management. MC Graw Hill, 1958.