Walter F. Quezada Moreno, Marcia Proaño Molina, Edwin Cevallos Carvajal, Elsa Quilumbaquin Toaquiza, Josue Israel Sopalo Romero & Walter D. Quezada Torres. Tagetes Pusilla Kunth Essential Oil: Color and Composition in a Fresh and Stored Sample. NACB-V6 2023, 149-166.