APA-Zitierstil (7. Ausg.)

Ploeg, J. v. d., Bernardo, E. C., & Masipiquena, A. B. (2003). The Sierra Madre mountain range: Global relevance, local realities. Cagayan Valley Program on Environment and Development, Isabela State University.

Chicago-Zitierstil (17. Ausg.)

Ploeg, Jan van der, Eileen C. Bernardo, und Andres B. Masipiquena. The Sierra Madre Mountain Range: Global Relevance, Local Realities. Isabela: Cagayan Valley Program on Environment and Development, Isabela State University, 2003.

MLA-Zitierstil (9. Ausg.)

Ploeg, Jan van der, et al. The Sierra Madre Mountain Range: Global Relevance, Local Realities. Cagayan Valley Program on Environment and Development, Isabela State University, 2003.