Cita APA (7th ed.)

Graham, H. J. (1981). Parasites and the land application of sewage sludge. Environment Canada : Training and Technology Transfer Division (Water), Environmental Protection Service, Environment Canada [distributor].

Cita Chicago (17th ed.)

Graham, H. J. Parasites and the Land Application of Sewage Sludge. Ottawa, Ont.: Environment Canada : Training and Technology Transfer Division (Water), Environmental Protection Service, Environment Canada [distributor], 1981.

Cita MLA (8th ed.)

Graham, H. J. Parasites and the Land Application of Sewage Sludge. Environment Canada : Training and Technology Transfer Division (Water), Environmental Protection Service, Environment Canada [distributor], 1981.