APA (7th ed.) Citation

Davies, R. A. (1973). Ritter Island -- 1972 activity. Dept. of Lands, Surveys & Mines.

Chicago Style (17th ed.) Citation

Davies, R. A. Ritter Island -- 1972 Activity. [Port Moresby]: Dept. of Lands, Surveys & Mines, 1973.

MLA (9th ed.) Citation

Davies, R. A. Ritter Island -- 1972 Activity. Dept. of Lands, Surveys & Mines, 1973.

Warning: These citations may not always be 100% accurate.