एपीए उद्धरण

Roofs, P. (2003). Roof construction mannual. Boston: Publishers for Architecture.

शिकागो स्टाइल उद्धरण

Roofs, Pitched. Roof Construction Mannual. Boston: Publishers for Architecture, 2003.

एमएलए उद्धरण

Roofs, Pitched. Roof Construction Mannual. Boston: Publishers for Architecture, 2003.