APA aipamena

Hakkila, P. (1989). Utilization of residual forest biomass. Springer Verlag.

Chicago Style aipamena

Hakkila, P. Utilization of Residual Forest Biomass. Berlin: Springer Verlag, 1989.

MLA aipamena

Hakkila, P. Utilization of Residual Forest Biomass. Springer Verlag, 1989.