Não informado. (1970). Forest Research Series. Clemson University, Department of Forestry.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Forest Research Series. Clemson, SC: Clemson University, Department of Forestry, 1970.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Forest Research Series. Clemson University, Department of Forestry, 1970.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.