McGill University. Industrial Relations Centre, Pathy, A. C., & Loerick, G. (1979). The Problem of "essentia services": Inconvenience, importance, or emergency. Industrial Relations Centre.
芝加哥风格引文McGill University. Industrial Relations Centre, Alexander C. Pathy, 与 Glenna Loerick. The Problem of "Essentia Services": Inconvenience, Importance, or Emergency. Montreal: Industrial Relations Centre, 1979.
MLA引文McGill University. Industrial Relations Centre, et al. The Problem of "Essentia Services": Inconvenience, Importance, or Emergency. Industrial Relations Centre, 1979.
警告：这些引文格式不一定是100％准确.