Stout, T. G., & Cowan, A. (2011). Japanese hiragana & katakana for beginners: The method that's helped thousands in the U.S. and Japan learn Japanese successfully. Tuttle Publishing.

Stout, Timothy G., and Alexis Cowan. Japanese Hiragana & Katakana for Beginners: The Method That's Helped Thousands in the U.S. and Japan Learn Japanese Successfully. Tokyo, Japan ; Rutland, Vermont: Tuttle Publishing, 2011.

Stout, Timothy G., and Alexis Cowan. Japanese Hiragana & Katakana for Beginners: The Method That's Helped Thousands in the U.S. and Japan Learn Japanese Successfully. Tuttle Publishing, 2011.