APA (7th ed.) Citation

Niklaus, P. W. (1981). The NAHBE engine. Citizens' Energy Project.

Chicago Style (17th ed.) Citation

Niklaus, Philip W. The NAHBE Engine. Washington, D.C.: Citizens' Energy Project, 1981.

MLA (9th ed.) Citation

Niklaus, Philip W. The NAHBE Engine. Citizens' Energy Project, 1981.