Dyfyniad APA
Dunlap, T. R. (2011). In the field, among the feathered: A history of birders and their guides. Oxford University Press.
Dyfyniad Arddull Chicago
Dunlap, Thomas R. In the Field, Among the Feathered: A History of Birders and Their Guides. Oxford ; New York: Oxford University Press, 2011.
Dyfyniad MLA
Dunlap, Thomas R. In the Field, Among the Feathered: A History of Birders and Their Guides. Oxford University Press, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.