Yolen, J., & Graves, L. D. (2011). Sister Bear: A Norse tale. Marshall Cavendish Children's.
芝加哥风格引文Yolen, Jane, 与 Linda Dockey Graves. Sister Bear: A Norse Tale. Tarrytown, NY: Marshall Cavendish Children's, 2011.
MLA引文Yolen, Jane, 与 Linda Dockey Graves. Sister Bear: A Norse Tale. Marshall Cavendish Children's, 2011.
警告：这些引文格式不一定是100％准确.