El-Shazly, A., Abdel-Ghani, A., & Wink, M. (2003). Pyrrolizidine alkaloids from Onosma arenaria (Boraginaceae). Biochemical systematics and ecology, 31(5), . https://doi.org/10.1016/S0305-1978(02)00177-1
Chicago Style (17th ed.) CitationEl-Shazly, Assem, Afaf Abdel-Ghani, and Michael Wink. "Pyrrolizidine Alkaloids from Onosma Arenaria (Boraginaceae)." Biochemical Systematics and Ecology 31, no. 5 (2003). https://doi.org/10.1016/S0305-1978(02)00177-1.
MLA (9th ed.) CitationEl-Shazly, Assem, et al. "Pyrrolizidine Alkaloids from Onosma Arenaria (Boraginaceae)." Biochemical Systematics and Ecology, vol. 31, no. 5, 2003, https://doi.org/10.1016/S0305-1978(02)00177-1.
Warning: These citations may not always be 100% accurate.