APA-ийн эшлэл(7 дахь хэвлэлт)

Littlejohn, A. (1988). Company to company: A new approach to busines correspondence in english. Cambridge University.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Littlejohn, Andrew. Company to Company: A New Approach to Busines Correspondence in English. Cambridge: Cambridge University, 1988.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Littlejohn, Andrew. Company to Company: A New Approach to Busines Correspondence in English. Cambridge University, 1988.