APA (7th ed.) Citation

ScienceDirect (Online service), Holm-Nielsen, L. B., Nielsen, I. C., & Balslev, H. (1989). Tropical forests. Academic.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Lauritz B. Holm-Nielsen, I. C. Nielsen, and Henrik Balslev. Tropical Forests. Academic, 1989.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Tropical Forests. Academic, 1989.