APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.