Rachmawati, Yuanita, and Romyun Khoiriyah. “Comparison of DNA Isolation Results With Simple Methods and Kits in Samples of Psidium Guajava Leaves”. Biotropic : The Journal of Tropical Biology 2, no. 2 (August 31, 2018): 93-99. Accessed July 20, 2019. http://jurnalsaintek.uinsby.ac.id/index.php/biotropic/article/view/339.