APA aipamena

Viera, C. J., Kopsell, E., Beer, J., Jiménez Otárola, F., & Lok, R. (1999). Forestry incentives to establish and manage timber trees in coffee fields.

Chicago Style aipamena

Viera, Carlos J., Edgar Kopsell, John Beer, Francisco Jiménez Otárola, y Rosanna Lok. Forestry Incentives to Establish and Manage Timber Trees in Coffee Fields. 1999.

MLA aipamena

Viera, Carlos J., et al. Forestry Incentives to Establish and Manage Timber Trees in Coffee Fields. 1999.