Muguti, E., Everts, S., Schulte, B., & Smallegance, L. (1999). Energy effeciency for small and medium scale enterprises. Intermediate Technology Productions.
Lua i Stíl Chicago (17ú heag.)Muguti, Elizabeth, Saskia Everts, Bob Schulte, agus Linda Smallegance. Energy Effeciency for Small and Medium Scale Enterprises. Netherlands: Intermediate Technology Productions, 1999.
Lua MLA (9ú heag.)Muguti, Elizabeth, et al. Energy Effeciency for Small and Medium Scale Enterprises. Intermediate Technology Productions, 1999.
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