APA
American Petroleum Institute A., . (2020). Recommended Practice for Construction Parallel to Existing Underground Transmission Pipelines. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 2020. Recommended Practice for Construction Parallel to Existing Underground Transmission Pipelines. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (2020). Recommended Practice for Construction Parallel to Existing Underground Transmission Pipelines. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Recommended Practice for Construction Parallel to Existing Underground Transmission Pipelines. Washington: American Petroleum Institute, API. 2020.