APA (7e ed.) Bronvermelding

Ellison, B. K. (1973). Labour intensive methods in road construction. Dept. of Public Works, Roads and Bridges Division.

Chicago (17e ed.) Bronvermelding

Ellison, B. K. Labour Intensive Methods in Road Construction. [Port Moresby]: Dept. of Public Works, Roads and Bridges Division, 1973.

MLA (9e ed.) Bronvermelding

Ellison, B. K. Labour Intensive Methods in Road Construction. Dept. of Public Works, Roads and Bridges Division, 1973.