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♦ ¹THE WINTER DIET OF THE GREAT-WINGED PETREL PTERODROMA MACROPTERA AT SUB-ANTARCTIC MARION ISLAND IN 1991, JOHN COOPER & NORBERT T.W. KLAGES, Marine Ornithology 37: 261–263 (2009)
♦ ²Diet composition, continuity in prey availability and marine habitat – keystones to population stability in the Snares Penguin (Eudyptes robustus), Thomas Mattern, David M. Houston, Chris Lalas, Alvin N. Setiawan and Lloyd S. Davis, Emu, 2009, 109, 204–213