APA (7th ed.) Citation

Belen, L. Q. (1991). The ultimate formula for success. [s.n.].

Chicago Style (17th ed.) Citation

Belen, Leonardo Q. The Ultimate Formula for Success. Manila: [s.n.], 1991.

MLA (9th ed.) Citation

Belen, Leonardo Q. The Ultimate Formula for Success. [s.n.], 1991.