Kumar, S. (1974). The changing concepts of reference service. Vikas Pub. House.
Chicago Style (17th ed.) CitationKumar, Suseela. The Changing Concepts of Reference Service. Delhi: Vikas Pub. House, 1974.
MLA引文Kumar, Suseela. The Changing Concepts of Reference Service. Vikas Pub. House, 1974.
警告:這些引文格式不一定是100%准確.