Cita APA

Langan John, & Johnson Beth. (2012). English Essentials (Langan). NewYork: Mc Graw Hill Higher Education.

Chicago Style Citation

Langan John, i Johnson Beth. English Essentials (Langan). NewYork: Mc Graw Hill Higher Education, 2012.

Cita MLA

Langan John, i Johnson Beth. English Essentials (Langan). NewYork: Mc Graw Hill Higher Education, 2012.

Atenció: Aquestes cites poden no estar 100% correctes.