Cita APA (7a ed.)

Canadá. Department of Lands and Forests. (1949). Forest spraying and some effects of DDT. Department of Lands and Forests.

Cita Chicago Style (17a ed.)

Canadá. Department of Lands and Forests. Forest Spraying and Some Effects of DDT. Ontario: Department of Lands and Forests, 1949.

Cita MLA (8a ed.)

Canadá. Department of Lands and Forests. Forest Spraying and Some Effects of DDT. Department of Lands and Forests, 1949.