Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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