APA (7 वां संस्करण) प्रशस्ति पत्र

Guthrie, J. A., & Iulo, W. (1963). Some economic aspects of the pulp and paper industry: With particular reference to Washington and Oregon.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Guthrie, John A., और William Iulo. Some Economic Aspects of the Pulp and Paper Industry: With Particular Reference to Washington and Oregon. [Seattle?], 1963.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Guthrie, John A., और William Iulo. Some Economic Aspects of the Pulp and Paper Industry: With Particular Reference to Washington and Oregon. 1963.

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