Hakuin Ekaku itu apa sih?

adalah salah satu figur paling berpengaruh dalam Buddha Zen Jepang.

Hakuin lahir pada 1686 di desa kecil Hara, di kaki Gunung Fuji.

Mohr, Michel. "Emerging from Non-duality: Kōan Practice in the Rinzai Tradition since Hakuin." In The Kōan: Texts and Contexts in Zen Buddhism, edited by S. Heine and D. S. Wright. Oxford and New York: Oxford University Press, 2000.

Trevor Leggett, The Tiger's Cave, ISBN 0-8048-2021-X, contains the story of Hakuin's illness.

Waddell, Norman, trans. "Hakuin's Yasenkanna." In The Eastern Buddhist (New Series) 34 (1):79-119, 2002.

Yampolsky, Philip B. The Zen Master Hakuin: Selected Writings. Edited by W. T. de Bary. Vol. LXXXVI, Translations from the Oriental Classics, Records or Civilization: Sources and Studies. New York: Columbia University Press, 1971, ISBN 0-231-03463-6

Yampolsky, Philip. "Hakuin Ekaku." The Encyclopedia of Religion. Ed. Mircea Eliade. Vol. 6. New York: MacMillan, 1987.