APA

American Petroleum Institute A., . (1987). Measurement and calibration of spheres and spheroids. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1987. Measurement and calibration of spheres and spheroids. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1987). Measurement and calibration of spheres and spheroids. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Measurement and calibration of spheres and spheroids. Washington: American Petroleum Institute, API. 1987.