Παραπομπή σε μορφή APA (7η εκδ.)

Howell, A. R. (1974). Study of the exposure to noise of operators of mechanical logging equipment in British Columbia. Canadian Forestry Service, Department of Environment.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Howell, A. R. Study of the Exposure to Noise of Operators of Mechanical Logging Equipment in British Columbia. Ottawa: Canadian Forestry Service, Department of Environment, 1974.

Παραπομπή σε μορφή MLA (9th εκδ.)

Howell, A. R. Study of the Exposure to Noise of Operators of Mechanical Logging Equipment in British Columbia. Canadian Forestry Service, Department of Environment, 1974.