Hoffman, D. R. (1979). The energy-efficient church How to save energy (and money) in your church. The Pilgrim Press.
Citace podle Chicago (17th ed.)Hoffman, Douglas R. The Energy-efficient Church How to Save Energy (and Money) in Your Church. The Pilgrim Press, 1979.
Citace podle MLA (9th ed.)Hoffman, Douglas R. The Energy-efficient Church How to Save Energy (and Money) in Your Church. The Pilgrim Press, 1979.
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