Dyfyniad APA

OToole, C. (1990). Insects and spiders: Encyclopedia of the animal world. Facts on File.

Dyfyniad Arddull Chicago

OToole, Christopher. Insects and Spiders: Encyclopedia of the Animal World. New York: Facts on File, 1990.

Dyfyniad MLA

OToole, Christopher. Insects and Spiders: Encyclopedia of the Animal World. Facts on File, 1990.

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