Coura, J. C. P., Silva, C. A. d. O. e., Silva, E. S., Valladão, S. A., & Duarte, M. G. R. (2021, December). DEVELOPMENT AND VALIDATION OF A FAST AND SIMPLE HPLC-UV METHOD TO DETERMINE CAFFEINE IN GUARANA (Paullinia cupana) FOOD SUPPLEMENTS. Química Nova.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Coura, Júlia Cecília Pereira, Cláudia Aparecida de Oliveira e. Silva, Edvane Santos Silva, Sara Araújo Valladão, و Maria Gorette Resende Duarte. "DEVELOPMENT AND VALIDATION OF A FAST AND SIMPLE HPLC-UV METHOD TO DETERMINE CAFFEINE IN GUARANA (Paullinia Cupana) FOOD SUPPLEMENTS." Química Nova Dec. 2021.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Coura, Júlia Cecília Pereira, et al. "DEVELOPMENT AND VALIDATION OF A FAST AND SIMPLE HPLC-UV METHOD TO DETERMINE CAFFEINE IN GUARANA (Paullinia Cupana) FOOD SUPPLEMENTS." Química Nova, Dec. 2021.