Schopmeyer, C. S. (1974). Seeds of Woody Plants in the United States. Agriculture Handbook No. 450. Washington, D.C.: United States Department of Agriculture Forest Service.
Huss J. (2004) Afforestation | Stand establishment, treatment and promotion – European experience; Encyclopedia of forest sciences; Elsevier; pp. 14–27 https://doi.org/10.1016/B0-12-145160-7/00224-6
Zasada, John; Norum, Rodney (1 March 1986). "Prescribed Burning White Spruce Slash in Interior Alaska". Northern Journal of Applied Forestry. 3 (1): 16–18. doi:10.1093/njaf/3.1.16. ISSN0742-6348.
MacKey, Brendan G.; McKenney, Daniel W.; Yang, Yin-Qian; McMahon, June P.; Hutchinson, Michael F. (1 March 1996). "Site regions revisited: a climatic analysis of Hills' site regions for the province of Ontario using a parametric method". Canadian Journal of Forest Research. 26 (3): 333–354. Bibcode:1996CaJFR..26..333M. doi:10.1139/x26-038. ISSN0045-5067.
Alexander, R. R.; Shepperd, W. D. (1984). "Silvical characteristics of Engelmann spruce"(PDF). General Technical Report, Rocky Mountain Forest and Range Experiment Station, USDA Forest Service (RM-114).
MacKey, Brendan G.; McKenney, Daniel W.; Yang, Yin-Qian; McMahon, June P.; Hutchinson, Michael F. (1 March 1996). "Site regions revisited: a climatic analysis of Hills' site regions for the province of Ontario using a parametric method". Canadian Journal of Forest Research. 26 (3): 333–354. Bibcode:1996CaJFR..26..333M. doi:10.1139/x26-038. ISSN0045-5067.
Arnott, J. T. (1974). "Germination and seedling establishment". In Cayford, J. (ed.). Direct Seeding Symposium. Timmins, Ontario. September 11, 12, 13, 1973. Ottawa, ON: Canadian Forestry Services. pp. 55–66.
Helliwell, R., and E. R. Wilson. (2012). Continuous cover forestry in Britain: challenges and opportunities..Quarterly Journal of Forestry 106(3): 214-224 [1]
Hawley, Ralph C; Smith, David Martyn (1954). The Practice of Silviculture (6th ed.). New York: Wiley. OCLC976898179.
International Union of Forestry Research Organizations (1971). Terminology of Forest Science, Technology Practice and Products: English-Language Version. F. C. Ford-Robertson. Washington, D.C.: Society of American Foresters. ISBN978-0-939970-16-2. OCLC223725063.
Zasada, J. C. (1985). "Production, dispersal and germination, and first-year seedling survival of white spruce and birch in the Rosie Creek burn". In Juday, Glenn; Dyrness, C. (eds.). Early Results of the Rosie Creek Fire Research Project, 1984. Miscellaneous Publications. Vol. 85–2. Fairbanks, Alaska: University of Alaska, Fairbanks Agricultural and Forestry Experiment Station. OCLC15124930.
Zasada, John; Norum, Rodney (1 March 1986). "Prescribed Burning White Spruce Slash in Interior Alaska". Northern Journal of Applied Forestry. 3 (1): 16–18. doi:10.1093/njaf/3.1.16. ISSN0742-6348.
MacKey, Brendan G.; McKenney, Daniel W.; Yang, Yin-Qian; McMahon, June P.; Hutchinson, Michael F. (1 March 1996). "Site regions revisited: a climatic analysis of Hills' site regions for the province of Ontario using a parametric method". Canadian Journal of Forest Research. 26 (3): 333–354. Bibcode:1996CaJFR..26..333M. doi:10.1139/x26-038. ISSN0045-5067.
Toumey, James W; Korstian, Clarence F (1954). Seeding and Planting in the Practice of Forestry. New York: Wiley & Son. OCLC860730575.
Toumey, James William; Stevens, Clark Leavitt (1928). The Testing of Coniferous Tree Seeds at the School of Forestry, Yale University, 1906-1926. Vol. 21. Yale University. OCLC3398562.