Hepler, D. E., & Wallach, P. R. (1982). Architecture: Drafting and design (4th ed.). National Book Store.
Lua i Stíl Chicago (17ú heag.)Hepler, Donald E., agus Paul Ross Wallach. Architecture: Drafting and Design. 4th ed. Manila: National Book Store, 1982.
Lua MLA (9ú heag.)Hepler, Donald E., agus Paul Ross Wallach. Architecture: Drafting and Design. 4th ed. National Book Store, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.