APA-ийн эшлэл(7 дахь хэвлэлт)

GILBREATH, R. D. (1987). Forward thinking: The pragmatist's guide to today'sbusiness trends. McGraw-Hill.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

GILBREATH, Robert D. Forward Thinking: The Pragmatist's Guide to Today'sbusiness Trends. New York: McGraw-Hill, 1987.

MLA -ийн эшлэл (9 дэх хэвлэлт)

GILBREATH, Robert D. Forward Thinking: The Pragmatist's Guide to Today'sbusiness Trends. McGraw-Hill, 1987.