APA

United States, . (19). Study of the treatability of wastewater from a coal gasification plant. [Washington, D.C: .

Chicago

United States, . 19. Study of the treatability of wastewater from a coal gasification plant. [Washington, D.C: .

Harvard

United States, . (19). Study of the treatability of wastewater from a coal gasification plant. [Washington, D.C: .

MLA

United States, . Study of the treatability of wastewater from a coal gasification plant. [Washington, D.C: . 19.