APA

Norman D. A., Perkins J., American Petroleum Institute A., Norman D. A. & Perkins J. (1991). Non-hazardous solid waste landfill policy. Washington: American Petroleum Institute, API.

Chicago

Norman Donald A, Perkins Jody, American Petroleum Institute API, Norman Donald A and Perkins Jody. 1991. Non-hazardous solid waste landfill policy. Washington: American Petroleum Institute, API.

Harvard

Norman D. A., Perkins J., American Petroleum Institute A., Norman D. A. and Perkins J. (1991). Non-hazardous solid waste landfill policy. Washington: American Petroleum Institute, API.

MLA

Norman Donald A, Perkins Jody, American Petroleum Institute API, Norman Donald A and Perkins Jody. Non-hazardous solid waste landfill policy. Washington: American Petroleum Institute, API. 1991.