APA (7th ed.) Citation

Espino, J. M. (1981). Orbit 21. Philippine Education Co.

Chicago Style (17th ed.) Citation

Espino, Jose Maria. Orbit 21. Manila: Philippine Education Co, 1981.

MLA (9th ed.) Citation

Espino, Jose Maria. Orbit 21. Philippine Education Co, 1981.

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