APA-referens (7:e uppl.)

Boulding, E., & Boulding, K. E. (1995). The future: Images and processes. Sage Publications.

Chicago-referens (17:e uppl.)

Boulding, Elise, och Kenneth E. Boulding. The Future: Images and Processes. Thousand Oaks, Calif.: Sage Publications, 1995.

MLA-referens (8:e uppl.)

Boulding, Elise, och Kenneth E. Boulding. The Future: Images and Processes. Sage Publications, 1995.