APA

American Petroleum Institute A., . (1986). Air preheat systems for fired process heaters. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1986. Air preheat systems for fired process heaters. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1986). Air preheat systems for fired process heaters. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Air preheat systems for fired process heaters. Washington: American Petroleum Institute, API. 1986.