Citazione Stile APA (7a Edizione)

Langan, J. (2002). Reading and study skills (séptima edición.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Langan, John. Reading and Study Skills. séptima edición. Boston, MA: McGraw-Hill, 2002.

Citatione MLA (9a ed.)

Langan, John. Reading and Study Skills. séptima edición. McGraw-Hill, 2002.