Cita APA (7a ed.)

Gopalakrishnan, P. (2006). Purchasing and materials management. Tata McGraw-Hill.

Cita Chicago Style (17a ed.)

Gopalakrishnan, P. Purchasing and Materials Management. New delhi.-: Tata McGraw-Hill, 2006.

Cita MLA (9a ed.)

Gopalakrishnan, P. Purchasing and Materials Management. Tata McGraw-Hill, 2006.