APA (7th ed.) Citation

Johnson, S. E., & Richaenhaller, J. (1978). Patents relating to mechanization of timber harvesting (4th ed.). Canadian Forestry Service.

Chicago Style (17th ed.) Citation

Johnson, S. E., and J. Richaenhaller. Patents Relating to Mechanization of Timber Harvesting. 4th ed. Ottawa: Canadian Forestry Service, 1978.

MLA (9th ed.) Citation

Johnson, S. E., and J. Richaenhaller. Patents Relating to Mechanization of Timber Harvesting. 4th ed. Canadian Forestry Service, 1978.