Nagao, T., & Saitō, I. (2001). Kokology 2: More of the game of self-discovery. Fireside.
Chicago-čujuhus (17. p.)Nagao, Tadahiko, juo Isamu Saitō. Kokology 2: More of the Game of Self-discovery. New York: Fireside, 2001.
MLA-čujuhus (9. p.)Nagao, Tadahiko, juo Isamu Saitō. Kokology 2: More of the Game of Self-discovery. Fireside, 2001.
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