Citáce podľa APA (7th ed.)
(1984). Utilization of sewage sludge compost as a soil conditioner and fertilizer for plant growth. United States Department of Agriculture.
Citácia podle Chicago (17th ed.)
Utilization of Sewage Sludge Compost as a Soil Conditioner and Fertilizer for Plant Growth. Washington: United States Department of Agriculture, 1984.
Citácia podľa MLA (8th ed.)
Utilization of Sewage Sludge Compost as a Soil Conditioner and Fertilizer for Plant Growth. United States Department of Agriculture, 1984.
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