Cita APA (7a ed.)

Twigg, C., & Kibbe, H. (2013). Teaching verbal behavior in the natural environment. Teaching manding (requesting) using sign language. Establishing Operations Inc.

Cita Chicago Style (17a ed.)

Twigg, Cherish, y Holly Kibbe. Teaching Verbal Behavior in the Natural Environment. Teaching Manding (requesting) Using Sign Language. Marietta, GA: Establishing Operations Inc, 2013.

Cita MLA (9a ed.)

Twigg, Cherish, y Holly Kibbe. Teaching Verbal Behavior in the Natural Environment. Teaching Manding (requesting) Using Sign Language. Establishing Operations Inc, 2013.