Heroic period of modern architecture.

MLA

Smithson, A, and P Smithson. Heroic Period of Modern Architecture. London: Thames and Hudson, .

APA

Smithson, A., & Smithson, P. (.). Heroic period of modern architecture. London: Thames and Hudson.

Chicago

Smithson, A., and P Smithson. Heroic Period of Modern Architecture. London: Thames and Hudson, ..