Cita APA (7th ed.)

Lowrance, R., Hendrix, P. F., & Odum, E. P. (1987). A hierarchical approach to sustainable agriculture.

Cita Chicago (17th ed.)

Lowrance, Richard, Paul F. Hendrix, i Eugene P. Odum. A Hierarchical Approach to Sustainable Agriculture. 1987.

Cita MLA (9th ed.)

Lowrance, Richard, et al. A Hierarchical Approach to Sustainable Agriculture. 1987.