APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, Baker, C. D., Emmison, M., & Firth, A. (2005). Calling for help: Language and social interaction in telephone helplines. John Benjamins Pub. Co..

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, Carolyn D. Baker, Michael Emmison, ба Alan Firth. Calling for Help: Language and Social Interaction in Telephone Helplines. Amsterdam ; Philadelphia: John Benjamins Pub. Co., 2005.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, et al. Calling for Help: Language and Social Interaction in Telephone Helplines. John Benjamins Pub. Co., 2005.