Citazione Stile APA (7a Edizione)

Leedy, P. D. (1956). Reading improvement for adults. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Leedy, Paul D. Reading Improvement for Adults. New York: McGraw-Hill, 1956.

Citatione MLA (9a ed.)

Leedy, Paul D. Reading Improvement for Adults. McGraw-Hill, 1956.