APA-ийн эшлэл(7 дахь хэвлэлт)

Barclay, I. (2000). New product development a practice workbook for improving.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Barclay, Ian. New Product Development a Practice Workbook for Improving. Oxford, 2000.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Barclay, Ian. New Product Development a Practice Workbook for Improving. 2000.