Cita APA (7a ed.)

Eckenwalder, J. E. (2009). Conifers of the world: The complete reference. Timber Press.

Cita Chicago Style (17a ed.)

Eckenwalder, James E. Conifers of the World: The Complete Reference. Portland: Timber Press, 2009.

Cita MLA (9a ed.)

Eckenwalder, James E. Conifers of the World: The Complete Reference. Timber Press, 2009.