APA-referens (7:e uppl.)
Campbell, W. D. Birds of town and village paintings by basil ede / text by W. D. Campbell; foreword by H. R. H. the prince Philip, duke of Edinburgh.
Chicago-referens (17:e uppl.)
Campbell, W. D. Birds of Town and Village Paintings by Basil Ede / Text by W. D. Campbell; Foreword by H. R. H. the Prince Philip, Duke of Edinburgh.
MLA-referens (9:e uppl.)
Campbell, W. D. Birds of Town and Village Paintings by Basil Ede / Text by W. D. Campbell; Foreword by H. R. H. the Prince Philip, Duke of Edinburgh.
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