APA-ийн эшлэл(7 дахь хэвлэлт)

Lester, R. K. (1998). The productive edge: How U.S. industries are pointing the way to a new era of economic growth. W.W. Norton.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Lester, Richard K. The Productive Edge: How U.S. Industries Are Pointing the Way to a New Era of Economic Growth. New York: W.W. Norton, 1998.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Lester, Richard K. The Productive Edge: How U.S. Industries Are Pointing the Way to a New Era of Economic Growth. W.W. Norton, 1998.