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,.
Čikaški stil citiranja (17. izdanje)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.
MLA način citiranja (8. izdanje)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.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.