Citazione Stile APA (7a Edizione)

Lindgren, H. C. (1953). The art of human relations. Hermitage House.

Citazione stile Chigago Style (17a edizione)

Lindgren, Henry Clay. The Art of Human Relations. New York: Hermitage House, 1953.

Citatione MLA (9a ed.)

Lindgren, Henry Clay. The Art of Human Relations. Hermitage House, 1953.