Não informado. (2004). Eurasian Journal of Forest Research. Hokkaido University Forests.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Eurasian Journal of Forest Research. Sapporo, Japão: Hokkaido University Forests, 2004.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Eurasian Journal of Forest Research. Hokkaido University Forests, 2004.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.