APA-referens

Dugger, M. (1974). Air Pollution effects on plant growth ; Proceedings of the symposium sponsored by the division of agriculture and food Chemistry. American Chemical society.

Chicago-stil citat

Dugger, Mack. Air Pollution Effects on Plant Growth ; Proceedings of the Symposium Sponsored by the Division of Agriculture and Food Chemistry. Washington: American Chemical society, 1974.

MLA-referens

Dugger, Mack. Air Pollution Effects on Plant Growth ; Proceedings of the Symposium Sponsored by the Division of Agriculture and Food Chemistry. American Chemical society, 1974.