Singer, E. J., & Macdonald, I. D. (1970). Is apprenticeship outdated? Institute of Personnel Management.
芝加哥风格引文Singer, Edwin J., 与 Ian D. Macdonald. Is Apprenticeship Outdated? London: Institute of Personnel Management, 1970.
MLA引文Singer, Edwin J., 与 Ian D. Macdonald. Is Apprenticeship Outdated? Institute of Personnel Management, 1970.
警告：这些引文格式不一定是100％准确.