Various; Higley, W. K. Birds and Nature Vol. 11 No. 5 [May 1902] Illustrated by Color Photography.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVarious; Higley, William Kerr. Birds and Nature Vol. 11 No. 5 [May 1902] Illustrated by Color Photography.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVarious; Higley, William Kerr. Birds and Nature Vol. 11 No. 5 [May 1902] Illustrated by Color Photography.
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