Kjær, E. D. (1999). Sustainable use of forest genetic resources. DSR Grafik.
Chicago Style aipamenaKjær, Erik D. Sustainable Use of Forest Genetic Resources. Frederiksberg: DSR Grafik, 1999.
MLA aipamenaKjær, Erik D. Sustainable Use of Forest Genetic Resources. DSR Grafik, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.