Cita APA (7a ed.)

O'Neill, R. V. (1986). A Hierarchical Concept of Ecosystems. (MPB-23), Volume 23. Princeton University Press.

Cita Chicago Style (17a ed.)

O'Neill, R. V. A Hierarchical Concept of Ecosystems. (MPB-23), Volume 23. Princeton, N.J.: Princeton University Press, 1986.

Cita MLA (8a ed.)

O'Neill, R. V. A Hierarchical Concept of Ecosystems. (MPB-23), Volume 23. Princeton University Press, 1986.