Dawson, W. L., Bowles, J. H., & Brooks, A. (1909). The birds of Washington: A complete, scientific and popular account of the 372 species of birds found in the state (V. & V. large paper ed., with photogravures and special photographs.). Occidental Pub. Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Dawson, William Leon, John Hooper Bowles, و Allan Brooks. The Birds of Washington: A Complete, Scientific and Popular Account of the 372 Species of Birds Found in the State. V. & V. large paper ed., with photogravures and special photographs. Seattle: Occidental Pub. Co., 1909.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Dawson, William Leon, et al. The Birds of Washington: A Complete, Scientific and Popular Account of the 372 Species of Birds Found in the State. V. & V. large paper ed., with photogravures and special photographs. Occidental Pub. Co., 1909.