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  1. By: Dilger, William C - Johnsgard, Paul A
    Type: Article
    In: The Wilson bulletin
    Volume: 71
    Issue: 1
    Date: 1959
    Page Range: 46--53
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Johnsgard, Paul A - Wood, Robert E
    Type: Article
    In: The Wilson bulletin
    Volume: 80
    Issue: 2
    Date: 1968
    Page Range: 173--188
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Johnsgard, Paul A
    Type: Article
    In: The Wilson bulletin
    Volume: 72
    Issue: 2
    Date: 1960
    Page Range: 133--155
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  4. By: Johnsgard, Paul A
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 88
    Date: 1968
    Page Range: 140--148
    Publication Info: London, British Ornithologists' Club, 1893-
  5. By: Johnsgard, Paul A
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 81
    Date: 1961
    Page Range: 37--43
    Publication Info: London, British Ornithologists' Club, 1893-