Sapp, G. (1941). Happy helpers. Florida curriculum laboratory, College of education, University of Florida and State dept. of education.
Citação do estilo Chicago (17ª ed.)Sapp, Gertrude. Happy Helpers. Gainesville: Florida curriculum laboratory, College of education, University of Florida and State dept. of education, 1941.
Citação MLA (8ª ed.)Sapp, Gertrude. Happy Helpers. Florida curriculum laboratory, College of education, University of Florida and State dept. of education, 1941.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.