Pit & quarry handbook and buyers guide for the nonmetallic mineral industries. Pit and Quarry Publications, Inc. [etc.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPit & Quarry Handbook and Buyers Guide for the Nonmetallic Mineral Industries. Chicago: Pit and Quarry Publications, Inc. [etc.].
एमएलए (8वां संस्करण) प्रशस्ति पत्रPit & Quarry Handbook and Buyers Guide for the Nonmetallic Mineral Industries. Pit and Quarry Publications, Inc. [etc.].
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.