Callan, E. Auden's new year letter: a new style of architecture: Edward Callan. Auden : a collection of critical essays.(1964).
Chicago-referens (17:e uppl.)Callan, Edward. "Auden's New Year Letter: A New Style of Architecture: Edward Callan." Auden : A Collection of Critical Essays.(1964) .
MLA-referens (8:e uppl.)Callan, Edward. "Auden's New Year Letter: A New Style of Architecture: Edward Callan." Auden : A Collection of Critical Essays.(1964), .
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