McGill University. Industrial Relations Centre, Pathy, A. C., & Loerick, G. (1979). The Problem of "essentia services": Inconvenience, importance, or emergency. Industrial Relations Centre.
Citazione stile Chigago Style (17a edizione)McGill University. Industrial Relations Centre, Alexander C. Pathy, e Glenna Loerick. The Problem of "Essentia Services": Inconvenience, Importance, or Emergency. Montreal: Industrial Relations Centre, 1979.
Citatione MLA (9a ed.)McGill University. Industrial Relations Centre, et al. The Problem of "Essentia Services": Inconvenience, Importance, or Emergency. Industrial Relations Centre, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.