Cita APA (7th ed.)

Staaf, K., & Wiksten, N. (1984). Tree harvesting techniques. M. Nijhoff / W. Junk Publishers.

Cita Chicago (17th ed.)

Staaf, K.A.G, i N.A Wiksten. Tree Harvesting Techniques. Dordrecht: M. Nijhoff / W. Junk Publishers, 1984.

Cita MLA (9th ed.)

Staaf, K.A.G, i N.A Wiksten. Tree Harvesting Techniques. M. Nijhoff / W. Junk Publishers, 1984.