APA (7th ed.) Citation

Ragay, V. M. (1999). A book of life ... time for quality life. [publisher not identified].

Chicago Style (17th ed.) Citation

Ragay, Vincent M. A Book of Life ... Time for Quality Life. Baguio City: [publisher not identified], 1999.

MLA (9th ed.) Citation

Ragay, Vincent M. A Book of Life ... Time for Quality Life. [publisher not identified], 1999.