APA-ийн эшлэл(7 дахь хэвлэлт)

Helmers, C., & Rogers, M. (2008). Innovation and the survival of new firms across British regions. University of Oxford.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Helmers, C., ба M. Rogers. Innovation and the Survival of New Firms Across British Regions. University of Oxford, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Helmers, C., ба M. Rogers. Innovation and the Survival of New Firms Across British Regions. University of Oxford, 2008.