APA (7th ed.) Citation

Delos Reyes, R. A. (1991). Watch your business English: A practical guidebook to over 800 concerns on correct usage in business correspondence. PROSEC.

Chicago Style (17th ed.) Citation

Delos Reyes, Rodolfo A. Watch Your Business English: A Practical Guidebook to over 800 Concerns on Correct Usage in Business Correspondence. Makati: PROSEC, 1991.

MLA (9th ed.) Citation

Delos Reyes, Rodolfo A. Watch Your Business English: A Practical Guidebook to over 800 Concerns on Correct Usage in Business Correspondence. PROSEC, 1991.