APA
American Petroleum Institute A., . (1991). Manual of petroleum measurement standards. Chapter 2- Tank calibration. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 1991. Manual of petroleum measurement standards. Chapter 2- Tank calibration. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (1991). Manual of petroleum measurement standards. Chapter 2- Tank calibration. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Manual of petroleum measurement standards. Chapter 2- Tank calibration. Washington: American Petroleum Institute, API. 1991.