Dyfyniad APA

Hodges, L. (1977). Environmental Pollution (2nd.). Holt, Rinehart and Winston, Inc.

Dyfyniad Arddull Chicago

Hodges, Lawrent. Environmental Pollution. 2nd. New York: Holt, Rinehart and Winston, Inc, 1977.

Dyfyniad MLA

Hodges, Lawrent. Environmental Pollution. 2nd. Holt, Rinehart and Winston, Inc, 1977.

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