Citazione APA

Sowers, J. I. (1925). The boy and his vocation. The Manual arts press.

Stile di citazione Chicago

Sowers, John Irving. The Boy and His Vocation. Peoria, Ill.: The Manual arts press, 1925.

Citazione MLA

Sowers, John Irving. The Boy and His Vocation. The Manual arts press, 1925.