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jstor.org
Heiss, Andreas (December 2005). "The oldest evidence of Nigella damascena L. (Ranunculaceae) and its possible introduction to central Europe". Vegetation History and Archaeobotany. 14 (4): 562–570. CiteSeerX10.1.1.156.85. doi:10.1007/s00334-005-0060-4. JSTOR23419312.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
Heiss, Andreas (December 2005). "The oldest evidence of Nigella damascena L. (Ranunculaceae) and its possible introduction to central Europe". Vegetation History and Archaeobotany. 14 (4): 562–570. CiteSeerX10.1.1.156.85. doi:10.1007/s00334-005-0060-4. JSTOR23419312.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
Hassanien, Minar M. M.; Abdel-Razek, Adel G.; Rudzińska, Magdalena; Siger, Aleksander; Ratusz, Katarzyna; Przybylski, Roman (15 July 2014). "Phytochemical contents and oxidative stability of oils from non-traditional sources". European Journal of Lipid Science and Technology (dalam bahasa Inggris). 116 (11): 1563–1571. doi:10.1002/ejlt.201300475. ISSN1438-7697.