Cita APA (7a ed.)

Chappell, D. (1987). Standard letters in architectural practice (1st publ.). Architectural Press.

Cita Chicago Style (17a ed.)

Chappell, David. Standard Letters in Architectural Practice. 1st publ. London: Architectural Press, 1987.

Cita MLA (9a ed.)

Chappell, David. Standard Letters in Architectural Practice. 1st publ. Architectural Press, 1987.