Sigdel, A., & Chaudhary, S. S. (1998). A study of the effectiveness of pulse polio immunization programme (PPIP) - 2053 B.S.
芝加哥风格引文Sigdel, Abindra, 与 Sanjay Srivastava Chaudhary. A Study of the Effectiveness of Pulse Polio Immunization Programme (PPIP) - 2053 B.S. 1998.
MLA引文Sigdel, Abindra, 与 Sanjay Srivastava Chaudhary. A Study of the Effectiveness of Pulse Polio Immunization Programme (PPIP) - 2053 B.S. 1998.
警告：这些引文格式不一定是100％准确.