Loaiza, J., Valverde, R., Rodríguez, G., & Molina, J. (2004). Quantitative analyses of the main che mical constituents in the roots of Echinacea purpurea and E. angustifolia produced in Cos ta Rica.
استشهاد بنمط شيكاغوLoaiza, Jorge, Roberto Valverde, Gerardo Rodríguez, و Jorge Molina. Quantitative Analyses of the Main Che Mical Constituents in the Roots of Echinacea Purpurea and E. Angustifolia Produced in Cos Ta Rica. 2004.
MLA استشهادLoaiza, Jorge, Roberto Valverde, Gerardo Rodríguez, و Jorge Molina. Quantitative Analyses of the Main Che Mical Constituents in the Roots of Echinacea Purpurea and E. Angustifolia Produced in Cos Ta Rica. 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.