Sewa Singh. (1997). Handbook of reference and information services. Crest Publishing House.
シカゴスタイル引用形Sewa Singh. Handbook of Reference and Information Services. New Delhi: Crest Publishing House, 1997.
MLA引用形式Sewa Singh. Handbook of Reference and Information Services. Crest Publishing House, 1997.
警告: この引用は必ずしも正確ではありません.