Παραπομπή APA

Jeffers, J. N. R. (1978). Introduction to systems analysis with ecological applications.

Παραπομπή Chicago Style

Jeffers, John N R. Introduction to Systems Analysis with Ecological Applications. Edward Arnold Publishers Ltd., London, 1978.

Παραπομπή MLA

Jeffers, John N R. Introduction to Systems Analysis with Ecological Applications. 1978.