Dyfyniad APA
Gordon, D. (1991). Growing fruit in the upper Midwest. University of Minnesota Press.
Dyfyniad Arddull Chicago
Gordon, Donald. Growing Fruit in the Upper Midwest. Minneapolis: University of Minnesota Press, 1991.
Dyfyniad MLA
Gordon, Donald. Growing Fruit in the Upper Midwest. University of Minnesota Press, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.