Warnes, A. R. (1924). Coal tar distillation and working up of tar products (3d ed., rewritten and very greatly enl.). Van Nostrand.
Chicago-viite (17. p.)Warnes, Arthur R. Coal Tar Distillation and Working Up of Tar Products. 3d ed., rewritten and very greatly enl. New York: Van Nostrand, 1924.
MLA-viite (8. p.)Warnes, Arthur R. Coal Tar Distillation and Working Up of Tar Products. 3d ed., rewritten and very greatly enl. Van Nostrand, 1924.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.