Howell, M., & Johnson, T. G. (1998). Oklahoma's timber industry: An assessment of timber product output and use, 1996. USDA Forest Service, Southern Research Station.
Chicago-Zitierstil (17. Ausg.)Howell, Michael, und Tony G. Johnson. Oklahoma's Timber Industry: An Assessment of Timber Product Output and Use, 1996. Asheville, NC: USDA Forest Service, Southern Research Station, 1998.
MLA-Zitierstil (9. Ausg.)Howell, Michael, und Tony G. Johnson. Oklahoma's Timber Industry: An Assessment of Timber Product Output and Use, 1996. USDA Forest Service, Southern Research Station, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.