Northrup, H. R., Storholm, G. R., & paul, A. A. (1967). Restrictive labor practices in the supermarket industry. University of Pennsylvania Press.
Чикаго стиль цитування (17-те видання)Northrup, Herbert Roof, Gordon R. Storholm, та A. Abodeely paul. Restrictive Labor Practices in the Supermarket Industry. Philadelphia: University of Pennsylvania Press, 1967.
Стиль цитування MLA (9-ме видання)Northrup, Herbert Roof, et al. Restrictive Labor Practices in the Supermarket Industry. University of Pennsylvania Press, 1967.