Nightingale, F., Calabria, M. D., & Macrae, J. (1994). Suggestions for thought. University of Pennsylvania Press.
Citace podle Chicago (17th ed.)Nightingale, Florence, Michael D. Calabria, a Janet Macrae. Suggestions for Thought. Philadelphia: University of Pennsylvania Press, 1994.
Citace podle MLA (9th ed.)Nightingale, Florence, et al. Suggestions for Thought. University of Pennsylvania Press, 1994.
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