Ståhl, B. (1990). Taxonomic studies in the Theophrastaceae. Dept. of Systematic Botany, University of Göteborg.
Čikaški stil citiranja (17. izdanje)Ståhl, Bertil. Taxonomic Studies in the Theophrastaceae. Göteborg, Sweden: Dept. of Systematic Botany, University of Göteborg, 1990.
MLA način citiranja (8. izdanje)Ståhl, Bertil. Taxonomic Studies in the Theophrastaceae. Dept. of Systematic Botany, University of Göteborg, 1990.
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