Cita APA (7a ed.)

Gelderen, D. M. v., & Hoey Smith, J. R. P. v. (1996). Conifers: The illustrated encyclopedia. Timber.

Cita Chicago Style (17a ed.)

Gelderen, D. M. van, y J. R. P. van Hoey Smith. Conifers: The Illustrated Encyclopedia. Portland: Timber, 1996.

Cita MLA (8a ed.)

Gelderen, D. M. van, y J. R. P. van Hoey Smith. Conifers: The Illustrated Encyclopedia. Timber, 1996.