Cita APA (7th ed.)

Odum, H. T., & Arding, J. E. (1991). Working paper [on] emergy analysis of shrimp in Ecuador. s. n.].

Cita Chicago (17th ed.)

Odum, Howard T., i Jan E. Arding. Working Paper [on] Emergy Analysis of Shrimp in Ecuador. [s. l: s. n.], 1991.

Cita MLA (9th ed.)

Odum, Howard T., i Jan E. Arding. Working Paper [on] Emergy Analysis of Shrimp in Ecuador. s. n.], 1991.