Penoyre, J., & Ryan, M. (1975). The observer's book of architecture / written and illustrated by John Penoyre and Michael Ryan ; foreword by F.R.S. Yorke (3rd ed. (revised and reset).). F. Warne.
Chicago Style (17th ed.) CitationPenoyre, John, and Michael Ryan. The Observer's Book of Architecture / Written and Illustrated by John Penoyre and Michael Ryan ; Foreword by F.R.S. Yorke. 3rd ed. (revised and reset). London (etc.): F. Warne, 1975.
MLA (9th ed.) CitationPenoyre, John, and Michael Ryan. The Observer's Book of Architecture / Written and Illustrated by John Penoyre and Michael Ryan ; Foreword by F.R.S. Yorke. 3rd ed. (revised and reset). F. Warne, 1975.
Warning: These citations may not always be 100% accurate.