APA (7th ed.) Citation

Lieberthal, E. M., Pai, H. Y., & Pai, S. J. (1978). Chisanbop: Finger calculation method, a new mathematical system. Chisanbop Enterprises.

Chicago Style (17th ed.) Citation

Lieberthal, Edwin M., Hang Young Pai, and Sung Jin Pai. Chisanbop: Finger Calculation Method, a New Mathematical System. Mount Vernon, N.Y.: Chisanbop Enterprises, 1978.

MLA (9th ed.) Citation

Lieberthal, Edwin M., et al. Chisanbop: Finger Calculation Method, a New Mathematical System. Chisanbop Enterprises, 1978.