Citazione Stile APA (7a Edizione)

Harman, W. W. (1976). An incomplete guide to the future. San Francisco Book.

Citazione stile Chigago Style (17a edizione)

Harman, Willis W. An Incomplete Guide to the Future. San Francisco: San Francisco Book, 1976.

Citatione MLA (9a ed.)

Harman, Willis W. An Incomplete Guide to the Future. San Francisco Book, 1976.