Wharton research data services
MLA
Wharton Research Data Services. [Philadelphia, Pa.]: Wharton School, University of Pennsylvania, [9930?]
APA, 7th edition
([9930?]). Wharton research data services. [Philadelphia, Pa.]: Wharton School, University of Pennsylvania
Chicago, 17th edition
Wharton research data services. [Philadelphia, Pa.]: Wharton School, University of Pennsylvania, [9930?]