APA (7th ed.) Citation

Helmer, O. (1983). Looking forward: A guide to futures research (1. print.). Sage Publ.

Chicago Style (17th ed.) Citation

Helmer, Olaf. Looking Forward: A Guide to Futures Research. 1. print. Beverly Hills u.a: Sage Publ, 1983.

MLA (9th ed.) Citation

Helmer, Olaf. Looking Forward: A Guide to Futures Research. 1. print. Sage Publ, 1983.

Warning: These citations may not always be 100% accurate.