Swann, H. K. (1922). A synopsis of the Accipitres (diurnal birds of prey): Comprising species and subspecies described up to 1920, with their characters and distribution (2d ed., rev. and corr.). Wheldon & Wesley.
Chicago Style (17th ed.) CitationSwann, H. Kirke. A Synopsis of the Accipitres (diurnal Birds of Prey): Comprising Species and Subspecies Described Up to 1920, with Their Characters and Distribution. 2d ed., rev. and corr. London: Wheldon & Wesley, 1922.
MLA (9th ed.) CitationSwann, H. Kirke. A Synopsis of the Accipitres (diurnal Birds of Prey): Comprising Species and Subspecies Described Up to 1920, with Their Characters and Distribution. 2d ed., rev. and corr. Wheldon & Wesley, 1922.
Warning: These citations may not always be 100% accurate.