Gaya APA

Owen, J., Giok, T, B. (2017). [Thinking Spiritually. Bahasa Indonesia] Berpola Pikir Rohani . Surabaya: Momentum.

Gaya MLA

Owen, John.., Giok, The, Boen. "[Thinking Spiritually. Bahasa Indonesia] Berpola Pikir Rohani". Surabaya: Momentum, 2017. Text.