Dyfyniad APA
Nightingale, F., Calabria, M. D., & Macrae, J. (1994). Suggestions for thought. University of Pennsylvania Press.
Dyfyniad Arddull Chicago
Nightingale, Florence, Michael D. Calabria, and Janet Macrae. Suggestions for Thought. Philadelphia: University of Pennsylvania Press, 1994.
Dyfyniad MLA
Nightingale, Florence, et al. Suggestions for Thought. University of Pennsylvania Press, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.