Cita APA (7a ed.)
Caldwell, E. Group Techniques for the Classroom Teacher. Science Research Associates.
Cita estilo Chicago (17a ed.)
Caldwell, Edson. Group Techniques for the Classroom Teacher. Chicago, EUA: Science Research Associates.
Cita MLA (9a ed.)
Caldwell, Edson. Group Techniques for the Classroom Teacher. Science Research Associates.
Precaución: Estas citas no son 100% exactas.