Citazione Stile APA (7a Edizione)

Purdue University. Department of Engineering Extension. (1922). Bulletin. The University.

Citazione stile Chigago Style (17a edizione)

Purdue University. Department of Engineering Extension. Bulletin. Lafayette, Ind.: The University, 1922.

Citatione MLA (8a ed.)

Purdue University. Department of Engineering Extension. Bulletin. The University, 1922.