Cita APA (7a ed.)
Spence, W. P. (1991). Drafting: Technology and practice (3rd ed.). Glencoe/ Mcmillan/McGraw-Hill.
Cita Chicago Style (17a ed.)
Spence, William P. Drafting: Technology and Practice. 3rd ed. California: Glencoe/ Mcmillan/McGraw-Hill, 1991.
Cita MLA (9a ed.)
Spence, William P. Drafting: Technology and Practice. 3rd ed. Glencoe/ Mcmillan/McGraw-Hill, 1991.
Precaución: Estas citas no son 100% exactas.