Alderfer, J. K. (2018). Bird guide of North America: The best birding book for kids from National Geographic's bird experts (Second edition.). National Geographic.
Style de citation Chicago (17e éd.)Alderfer, Jonathan K. Bird Guide of North America: The Best Birding Book for Kids from National Geographic's Bird Experts. Second edition. Washington, D.C.: National Geographic, 2018.
Style de citation MLA (8e éd.)Alderfer, Jonathan K. Bird Guide of North America: The Best Birding Book for Kids from National Geographic's Bird Experts. Second edition. National Geographic, 2018.
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