Cita APA (7th ed.)
Jowitt, D., & Nnamonu, S. (1985). Common errors in English. Longman.
Cita Chicago (17th ed.)
Jowitt, David, i Silas Nnamonu. Common Errors in English. Hongkong: Longman, 1985.
Cita MLA (9th ed.)
Jowitt, David, i Silas Nnamonu. Common Errors in English. Longman, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.