Illuminating Engineering Society (Great Britain). Technical Committee. (1971). The calculation of utilization factors: The BZ method (Revised ed.). Illuminating Engineering Society.
Citace podle Chicago (17th ed.)Illuminating Engineering Society (Great Britain). Technical Committee. The Calculation of Utilization Factors: The BZ Method. Revised ed. London (York House, Westminster Bridge Rd, S.E.1): Illuminating Engineering Society, 1971.
Citace podle MLA (8th ed.)Illuminating Engineering Society (Great Britain). Technical Committee. The Calculation of Utilization Factors: The BZ Method. Revised ed. Illuminating Engineering Society, 1971.
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