APA (7e ed.) Bronvermelding

Public Petroleum Association of Canada, Laxer, J., & Martin, A. 1. (1976). The Big tough expensive job: Imperial Oil and the Canadian economy. Press Porcepic.

Chicago (17e ed.) Bronvermelding

Public Petroleum Association of Canada, James Laxer, en Anne 1951 Martin. The Big Tough Expensive Job: Imperial Oil and the Canadian Economy. [Erin, Ont.]: Press Porcepic, 1976.

MLA (9e ed.) Bronvermelding

Public Petroleum Association of Canada, et al. The Big Tough Expensive Job: Imperial Oil and the Canadian Economy. Press Porcepic, 1976.