APA (7th ed.) Citation

Philippine Press Institute & San Miguel Corporation. (1968). Clear effective writing: A PPI manual. Philippine Press Institute and the San Miguel Corporation.

Chicago Style (17th ed.) Citation

Philippine Press Institute and San Miguel Corporation. Clear Effective Writing: A PPI Manual. [Manila]: Philippine Press Institute and the San Miguel Corporation, 1968.

MLA (9th ed.) Citation

Philippine Press Institute and San Miguel Corporation. Clear Effective Writing: A PPI Manual. Philippine Press Institute and the San Miguel Corporation, 1968.