Murdanu, Yedi, Abrori, Cholis, AND Hasan, Muhamad. " Pengaruh Pemberian Teh Hitam terhadap VO2max dan Pemulihan Denyut Nadi Pasca Melakukan Latihan Treadmill (The Effect of Black Tea on VO2max and Heart Rate Recovery Time after Treadmill Exercise)" Pustaka Kesehatan [Online], Volume 4 Number 1 (19 January 2016)