APA (7th ed.) Citation

Ravenholt, A. (1968). Philippine Rock Industries, Incorporated: Grinding rock becomes a successful business venture. American Universities Field Staff.

Chicago Style (17th ed.) Citation

Ravenholt, Albert. Philippine Rock Industries, Incorporated: Grinding Rock Becomes a Successful Business Venture. [New York]: American Universities Field Staff, 1968.

MLA (9th ed.) Citation

Ravenholt, Albert. Philippine Rock Industries, Incorporated: Grinding Rock Becomes a Successful Business Venture. American Universities Field Staff, 1968.