Cita APA (7a ed.)

Filip, G. M., & Schmitt, C. L. (1990). Rx for abies: Silvicultural options for diseased firs in Oregon and Washington. United States. Department of Agriculture ; Forest Service ; Pacific Nothwest ; Research Station.

Cita Chicago Style (17a ed.)

Filip, Gregory M., y Craig L. Schmitt. Rx for Abies: Silvicultural Options for Diseased Firs in Oregon and Washington. Portland: United States. Department of Agriculture ; Forest Service ; Pacific Nothwest ; Research Station, 1990.

Cita MLA (8a ed.)

Filip, Gregory M., y Craig L. Schmitt. Rx for Abies: Silvicultural Options for Diseased Firs in Oregon and Washington. United States. Department of Agriculture ; Forest Service ; Pacific Nothwest ; Research Station, 1990.