Sidman, J., & Zagarenski, P. (2009). Red sings from treetops: A year in colors. Houghton Mifflin Books for Children.
Cita Chicago (17th ed.)Sidman, Joyce, i Pamela Zagarenski. Red Sings from Treetops: A Year in Colors. Boston: Houghton Mifflin Books for Children, 2009.
Cita MLA (9th ed.)Sidman, Joyce, i Pamela Zagarenski. Red Sings from Treetops: A Year in Colors. Houghton Mifflin Books for Children, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.