TATA McGRAWHILL. (2006). GENERAL KNOWLEDGE REFRESHER.
Cita Chicago (17th ed.)TATA McGRAWHILL. GENERAL KNOWLEDGE REFRESHER. 2006.
Cita MLA (9th ed.)TATA McGRAWHILL. GENERAL KNOWLEDGE REFRESHER. 2006.
Atenció: Aquestes cites poden no estar 100% correctes.