Kuiper, L. (1994). Architechural Analysis of Douglas-Fir Forests. Hagg: CIP-Data Kooninklike Bibliotheek.
Chicago Style aipamenaKuiper, L.C. Architechural Analysis of Douglas-Fir Forests. Den: Hagg: CIP-Data Kooninklike Bibliotheek, 1994.
MLA aipamenaKuiper, L.C. Architechural Analysis of Douglas-Fir Forests. Hagg: CIP-Data Kooninklike Bibliotheek, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.