APA

American Petroleum Institute A., . (1985). Manual of petroleum measurement standards. Chapter 13- Statistical aspects of measuring and sampling. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1985. Manual of petroleum measurement standards. Chapter 13- Statistical aspects of measuring and sampling. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1985). Manual of petroleum measurement standards. Chapter 13- Statistical aspects of measuring and sampling. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Manual of petroleum measurement standards. Chapter 13- Statistical aspects of measuring and sampling. Washington: American Petroleum Institute, API. 1985.