Cita APA (7th ed.)

Kumar, S. (1974). The Changing concepts of reference service. Vikas.

Cita Chicago (17th ed.)

Kumar, Suseela. The Changing Concepts of Reference Service. Delhi: Vikas, 1974.

Cita MLA (9th ed.)

Kumar, Suseela. The Changing Concepts of Reference Service. Vikas, 1974.