APA-ийн эшлэл(7 дахь хэвлэлт)

Brooks, I. (1997). The business environment: Challenges and changes. Prentice Hall.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Brooks, Ian. The Business Environment: Challenges and Changes. London: Prentice Hall, 1997.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Brooks, Ian. The Business Environment: Challenges and Changes. Prentice Hall, 1997.