Gaya APA

Griffith, S. (2019). Time cleanse: a proven system to eliminate wasted time, realize your full potential, and reinvest in what matters most . New York: Mc Graw-Hill.

Gaya MLA

Griffith, Steven,. "Time cleanse: a proven system to eliminate wasted time, realize your full potential, and reinvest in what matters most". New York: Mc Graw-Hill, 2019. Buku.