Sidman, J., & Zagarenski, P. (2009). Red sings from treetops: A year in colors. Houghton Mifflin Books for Children.
Citazione stile Chigago Style (17a edizione)Sidman, Joyce, e Pamela Zagarenski. Red Sings from Treetops: A Year in Colors. Boston: Houghton Mifflin Books for Children, 2009.
Citatione MLA (9a ed.)Sidman, Joyce, e Pamela Zagarenski. Red Sings from Treetops: A Year in Colors. Houghton Mifflin Books for Children, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.