(1992). 25 years of shell art: The Shell National Students Art competition. Shell Companies in the Philippines.
Chicago Style (17th ed.) Citation25 Years of Shell Art: The Shell National Students Art Competition. Makati: Shell Companies in the Philippines, 1992.
MLA (9th ed.) Citation25 Years of Shell Art: The Shell National Students Art Competition. Shell Companies in the Philippines, 1992.
Warning: These citations may not always be 100% accurate.