APA

Naisbitt J. 1., Aburdene P. C., .Ten new directions for the 1990´s: Megatrends 2000. New York: William Morrow and Company.

Chicago

Naisbitt John 1929, Aburdene Patricia Coaut, .Ten new directions for the 1990´s: Megatrends 2000. New York: William Morrow and Company.

Harvard

Naisbitt J. 1., Aburdene P. C., .Ten new directions for the 1990´s: Megatrends 2000. New York: William Morrow and Company.

MLA

Naisbitt John 1929, Aburdene Patricia Coaut, .New York: William Morrow and Company. .