APA (7th ed.) Citation

Regis, R. (1993). Crystal call: A Philippine story. InterSelf Foundation.

Chicago Style (17th ed.) Citation

Regis, Riza. Crystal Call: A Philippine Story. Manila: InterSelf Foundation, 1993.

MLA (9th ed.) Citation

Regis, Riza. Crystal Call: A Philippine Story. InterSelf Foundation, 1993.

Warning: These citations may not always be 100% accurate.