M. E. Rondon, J. J. Velasco, J. del C. Rojas, L. E. Gamez, and A. Morales, “Antimicrobial activity of four Valeriana L. (Caprifoliaceae) crude extracts, endemic species of the Venezuelan Andes”, Rev. Biol. Trop., vol. 66, no. 3, pp. 1282–1289, Sep. 2018.