Παραπομπή APA

(1987). V5: Proceedings of the Fifth National Symposium on Individual and Small Community Sewage Systems. Illinois United Educators.

Παραπομπή Chicago Style

V5: Proceedings of the Fifth National Symposium on Individual and Small Community Sewage Systems. Chicago: Illinois United Educators, 1987.

Παραπομπή MLA

V5: Proceedings of the Fifth National Symposium on Individual and Small Community Sewage Systems. Illinois United Educators, 1987.