APA

Simpson B. J., Howe W., Concawe, Simpson B. J. & Howe W. (1996). The role of occupational physician in the petroleum industry. Guidance for occupational physicians and managers. Brussels: Concawe.

Chicago

Simpson B J, Howe W, Concawe, Simpson B J and Howe W. 1996. The role of occupational physician in the petroleum industry. Guidance for occupational physicians and managers. Brussels: Concawe.

Harvard

Simpson B. J., Howe W., Concawe, Simpson B. J. and Howe W. (1996). The role of occupational physician in the petroleum industry. Guidance for occupational physicians and managers. Brussels: Concawe.

MLA

Simpson B J, Howe W, Concawe, Simpson B J and Howe W. The role of occupational physician in the petroleum industry. Guidance for occupational physicians and managers. Brussels: Concawe. 1996.