Dyfyniad APA

Yolen, J., & Graves, L. D. (2011). Sister Bear: A Norse tale. Marshall Cavendish Children's.

Dyfyniad Arddull Chicago

Yolen, Jane, and Linda Dockey Graves. Sister Bear: A Norse Tale. Tarrytown, NY: Marshall Cavendish Children's, 2011.

Dyfyniad MLA

Yolen, Jane, and Linda Dockey Graves. Sister Bear: A Norse Tale. Marshall Cavendish Children's, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.