APA (7. basım) Alıntı

Northrup, H. R. (1968). The Negro in the aerospace industry. Industrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania; distributed by University of Pennsylvania Press.

Chicago Style (17. basım) Atıf

Northrup, Herbert R. The Negro in the Aerospace Industry. Philadelphia: Industrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania; distributed by University of Pennsylvania Press, 1968.

MLA (8th ed.) Atıf

Northrup, Herbert R. The Negro in the Aerospace Industry. Industrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania; distributed by University of Pennsylvania Press, 1968.