Gaya APA

WRIGHT, F, B. (1977). Rural Water Supply And Sanitation third Ed. (Third Edition). New York. USA: Robert E Krieger Publ. Comp..

Gaya MLA

WRIGHT, Forrest, B. "Rural Water Supply And Sanitation third Ed.". Third Edition New York. USA: Robert E Krieger Publ. Comp., 1977. Text.