APA (7th ed.) Citation

Liefrink, F., & Jones, J. (1974). A Survey of the Languages Spoken by the Students at UPNG: E.R.U. Report 13. University of Papua New Guinea.

Chicago Style (17th ed.) Citation

Liefrink, Frans, and John Jones. A Survey of the Languages Spoken by the Students at UPNG: E.R.U. Report 13. [Port Moresby]: University of Papua New Guinea, 1974.

MLA (9th ed.) Citation

Liefrink, Frans, and John Jones. A Survey of the Languages Spoken by the Students at UPNG: E.R.U. Report 13. University of Papua New Guinea, 1974.