Παραπομπή APA

Langan, J. 1. (2003). Ten skills you really need to succeed in college. Boston: McGraw-Hill.

Παραπομπή Chicago Style

Langan, John 1942-. Ten Skills You Really Need to Succeed in College. Boston: McGraw-Hill, 2003.

Παραπομπή MLA

Langan, John 1942-. Ten Skills You Really Need to Succeed in College. Boston: McGraw-Hill, 2003.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.