APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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