Gaya APA

Lancaster, G. (2008). Developing Speech and Language Skills: A resource book for teachers, teaching assistants, and speech and language therapists (Cet. 1). London: Routledge.

Gaya MLA

Lancaster, Gwen. "Developing Speech and Language Skills: A resource book for teachers, teaching assistants, and speech and language therapists". Cet. 1 London: Routledge, 2008. Text.