Dyfyniad APA
Larsen, E. W., & Roots, B. I. (2005). Flower guide for holiday weekends in Eastern Canada and Northeastern U.S.A. NRC Press.
Dyfyniad Arddull Chicago
Larsen, Ellen Wynne, and Betty I. Roots. Flower Guide for Holiday Weekends in Eastern Canada and Northeastern U.S.A. Ottawa: NRC Press, 2005.
Dyfyniad MLA
Larsen, Ellen Wynne, and Betty I. Roots. Flower Guide for Holiday Weekends in Eastern Canada and Northeastern U.S.A. NRC Press, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.