Cita APA (7th ed.)
Varghese, P. (2011). Building materials. PHI.
Cita Chicago (17th ed.)
Varghese, P.C. Building Materials. New Delhi: PHI, 2011.
Cita MLA (9th ed.)
Varghese, P.C. Building Materials. PHI, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.