APA (7th ed.) Citation

Romero, R. G. (1974). Philippine chemicals directory. Business Trends (Phils.).

Chicago Style (17th ed.) Citation

Romero, Roberto G. Philippine Chemicals Directory. Caloocan City: Business Trends (Phils.), 1974.

MLA (9th ed.) Citation

Romero, Roberto G. Philippine Chemicals Directory. Business Trends (Phils.), 1974.

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