Citazione Stile APA (7a Edizione)

Snedden, D. S. (1910). The problem of vocational education. Houghton Mifflin company.

Citazione stile Chigago Style (17a edizione)

Snedden, David Samuel. The Problem of Vocational Education. Boston, New York [etc.]: Houghton Mifflin company, 1910.

Citatione MLA (9a ed.)

Snedden, David Samuel. The Problem of Vocational Education. Houghton Mifflin company, 1910.