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Trích dẫn kiểu Chicago (xuất bản lần thứ 7)International Symposium on the Use of Composts as Horticultural Substrates Ghent/Melle, Belgium, International Society for Horticultural Science. Commission for Plant Substrates, và O. Verdonck. International Symposium on the Use of Composts on Horticultural Substrates: Ghent/Melle, Belgium, 27-31 August 1984. Wageningen, Netherlands: [International Society for Horticultural Science, 1985.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)International Symposium on the Use of Composts as Horticultural Substrates Ghent/Melle, Belgium, et al. International Symposium on the Use of Composts on Horticultural Substrates: Ghent/Melle, Belgium, 27-31 August 1984. [International Society for Horticultural Science, 1985.