(1987). V5: Proceedings of the Fifth National Symposium on Individual and Small Community Sewage Systems. Illinois United Educators.
Chicago-стиль цитированияV5: Proceedings of the Fifth National Symposium on Individual and Small Community Sewage Systems. Chicago: Illinois United Educators, 1987.
MLA-цитированиеV5: Proceedings of the Fifth National Symposium on Individual and Small Community Sewage Systems. Illinois United Educators, 1987.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.