Kumar, V. (2003). Human skills I. Himalaya Publishing House.
Cita Chicago (17th ed.)Kumar, Vipan. Human Skills I. Mumbai: Himalaya Publishing House, 2003.
Cita MLA (9th ed.)Kumar, Vipan. Human Skills I. Himalaya Publishing House, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.