Cita APA (7th ed.)
Hepler, D. E., & Wallach, P. R. (1977). Architecture: Drafting and design (3d ed.). McGraw-Hill.
Cita Chicago (17th ed.)
Hepler, Donald E., i Paul Ross Wallach. Architecture: Drafting and Design. 3d ed. New York: McGraw-Hill, 1977.
Cita MLA (9th ed.)
Hepler, Donald E., i Paul Ross Wallach. Architecture: Drafting and Design. 3d ed. McGraw-Hill, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.