American Petroleum Institute. Division of Finance and Accounting. (1967). Report on certain petroleum industry accounting practices: Resurvey as of December 31, 1966. American Petroleum Institute,.
Citace podle Chicago (17th ed.)American Petroleum Institute. Division of Finance and Accounting. Report on Certain Petroleum Industry Accounting Practices: Resurvey as of December 31, 1966. N.Y.: American Petroleum Institute,, 1967.
Citace podle MLA (8th ed.)American Petroleum Institute. Division of Finance and Accounting. Report on Certain Petroleum Industry Accounting Practices: Resurvey as of December 31, 1966. American Petroleum Institute,, 1967.
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