Dyfyniad APA

Helmut F van Emden. (1989). Pest control and its ecology. Cambridge, New York: Cambridge Univ. Press.

Dyfyniad Arddull Chicago

Helmut F van Emden. Pest Control and Its Ecology. Cambridge, New York: Cambridge Univ. Press, 1989.

Dyfyniad MLA

Helmut F van Emden. Pest Control and Its Ecology. Cambridge, New York: Cambridge Univ. Press, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.