Oberholser, H. C. (1918). The Subspecies of Larus hyperboreus Gunnerus. The Auk, 35(4), 467.
Chicago Style (17th ed.) CitationOberholser, Harry C. "The Subspecies of Larus Hyperboreus Gunnerus." The Auk 35, no. 4 (1918): 467.
MLA (9th ed.) CitationOberholser, Harry C. "The Subspecies of Larus Hyperboreus Gunnerus." The Auk, vol. 35, no. 4, 1918, p. 467.
Warning: These citations may not always be 100% accurate.