APA (7e ed.) Bronvermelding

Fickett, A. P., Gellings, C. W., & Lovins, A. B. Efficient uses of energy.

Chicago (17e ed.) Bronvermelding

Fickett, Arnold P., Clerk W. Gellings, en Amory B. Lovins. Efficient Uses of Energy.

MLA (9e ed.) Bronvermelding

Fickett, Arnold P., et al. Efficient Uses of Energy.