Sidek, A., & Butterworth, M. (2009). Measurement and evaluation of the reference service of the National Library Board Singapore.
Chicago Style CitationSidek, Azizah, and Margaret Butterworth. Measurement and Evaluation of the Reference Service of the National Library Board Singapore. 2009.
MLA引文Sidek, Azizah, and Margaret Butterworth. Measurement and Evaluation of the Reference Service of the National Library Board Singapore. 2009.
警告：這些引文格式不一定是100％准確.