APA (7th ed.) Citation

Center for Compliance Information (Aspen Systems Corporation), Lawrence, K., McRae, A., Alley, S., Watson, T., & Rowland, H. S. (1980). Energy conservation sourcebook. Aspen Systems Corp.

Chicago Style (17th ed.) Citation

Center for Compliance Information (Aspen Systems Corporation), Kenneth Lawrence, Alexander McRae, Salley Alley, Tom Watson, and Howard S. Rowland. Energy Conservation Sourcebook. Rockville, Md: Aspen Systems Corp, 1980.

MLA (9th ed.) Citation

Center for Compliance Information (Aspen Systems Corporation), et al. Energy Conservation Sourcebook. Aspen Systems Corp, 1980.