APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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