Educational Services Incorporated. (1967). Introductory physical science. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEducational Services Incorporated. Introductory Physical Science. Englewood Cliff, NJ: Prentice-Hall, 1967.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEducational Services Incorporated. Introductory Physical Science. Prentice-Hall, 1967.
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