Simeone, Alejandro; Schlatter, Roberto P. (). „Threats to a Mixed-Species Colony of Spheniscus Penguins in Southern Chile”. Colonial Waterbirds. 21 (3): 418. doi:10.2307/1521654. JSTOR1521654.
Wilson, Rory P.; Wilson, Marie-Pierre; Duffy, David Cameron; M, Braulio Araya; Klages, Norbert (). „Diving behaviour and prey of the Humboldt Penguin (Spheniscus humboldti)”. Journal für Ornithologie (în engleză). 130 (1): 75–79. doi:10.1007/BF01647164. ISSN1439-0361.
Herling, C.; Culik, B. M.; Hennicke, J. C. (mai 2005). „Diet of the Humboldt penguin (Spheniscus humboldti) in northern and southern Chile”. Marine Biology (în engleză). 147 (1): 13–25. doi:10.1007/s00227-004-1547-8. ISSN0025-3162.
Paredes, Rosana; Zavalaga, Carlos.B (august 2001). „Nesting sites and nest types as important factors for the conservation of Humboldt penguins (Sphensicus humboldti)”. Biological Conservation. 100 (2): 199–205. doi:10.1016/s0006-3207(01)00023-4. ISSN0006-3207.
Simeone, Alejandro; Schlatter, Roberto P. (). „Threats to a Mixed-Species Colony of Spheniscus Penguins in Southern Chile”. Colonial Waterbirds. 21 (3): 418. doi:10.2307/1521654. JSTOR1521654.
Wilson, Rory P.; Wilson, Marie-Pierre; Duffy, David Cameron; M, Braulio Araya; Klages, Norbert (). „Diving behaviour and prey of the Humboldt Penguin (Spheniscus humboldti)”. Journal für Ornithologie (în engleză). 130 (1): 75–79. doi:10.1007/BF01647164. ISSN1439-0361.
Herling, C.; Culik, B. M.; Hennicke, J. C. (mai 2005). „Diet of the Humboldt penguin (Spheniscus humboldti) in northern and southern Chile”. Marine Biology (în engleză). 147 (1): 13–25. doi:10.1007/s00227-004-1547-8. ISSN0025-3162.
Paredes, Rosana; Zavalaga, Carlos.B (august 2001). „Nesting sites and nest types as important factors for the conservation of Humboldt penguins (Sphensicus humboldti)”. Biological Conservation. 100 (2): 199–205. doi:10.1016/s0006-3207(01)00023-4. ISSN0006-3207.