Dana, F. C., & Willmarth, E. H. (1937). Engineering problems manual (3d ed.). New York: McGraw-Hill Book Company.
Παραπομπή Chicago StyleDana, Forest Charles, και Elmer Humphrey Willmarth. Engineering Problems Manual. 3d ed. New York: McGraw-Hill Book Company, 1937.
MLA引文Dana, Forest Charles, και Elmer Humphrey Willmarth. Engineering Problems Manual. 3d ed. New York: McGraw-Hill Book Company, 1937.
警告:這些引文格式不一定是100%准確.