Duke, J. A. (1987). Handbook of Energy Crops, Vol. 1: Agricultural Energy Potential of Developing Countries (1st. ed.). CRC Press.
Citace podle Chicago (17th ed.)Duke, James A. Handbook of Energy Crops, Vol. 1: Agricultural Energy Potential of Developing Countries. 1st. ed. Florida: CRC Press, 1987.
Citace podle MLA (9th ed.)Duke, James A. Handbook of Energy Crops, Vol. 1: Agricultural Energy Potential of Developing Countries. 1st. ed. CRC Press, 1987.
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