Blight, L. K. (2011). Egg Production in a Coastal Seabird, the Glaucous-Winged Gull (Larus glaucescens), Declines during the Last Century. Public Library of Science.
استشهاد بنمط شيكاغوBlight, Louise K. Egg Production in a Coastal Seabird, the Glaucous-Winged Gull (Larus Glaucescens), Declines During the Last Century. Public Library of Science, 2011.
MLA استشهادBlight, Louise K. Egg Production in a Coastal Seabird, the Glaucous-Winged Gull (Larus Glaucescens), Declines During the Last Century. Public Library of Science, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.