APA (7th ed.) Citation

Twidell, J. (1987). A guide to small wind energy conversion systems. Univ. Press.

Chicago Style (17th ed.) Citation

Twidell, John. A Guide to Small Wind Energy Conversion Systems. Cambridge <<[u.a.]>>: Univ. Press, 1987.

MLA (9th ed.) Citation

Twidell, John. A Guide to Small Wind Energy Conversion Systems. Univ. Press, 1987.