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Rockwell, Robert F.; Petersen, Margaret R.; Schmutz, Joel A. (1996). „Appendix A. Scientific nomenclature used for emperor geese”. The Emperor Goose: An Annotated Bibliography (на језику: енглески). University of Alaska. Institute of Arctic Biology: 80. ISSN0568-8604. Приступљено 2. 1. 2024.