Kaseda, S., & Woo, J. (2004). No.1 planning ability. Daehan Textbook.

Kaseda, Shinichi, and Jeyeol Woo. No.1 Planning Ability. Seoul, Korean: Daehan Textbook, 2004.

Kaseda, Shinichi, and Jeyeol Woo. No.1 Planning Ability. Daehan Textbook, 2004.