APA引文

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 (17th ed.) Citation

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引文

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.