APA (7th ed.) Citation

Keuneman, H., Hoefer, H. J., & Anderson, J. G. (1991). Sri Lanka (6th ed.). APA Publications.

Chicago Style (17th ed.) Citation

Keuneman, Herbert, Hans Johannes Hoefer, and John Gottberg Anderson. Sri Lanka. 6th ed. Hongkong: APA Publications, 1991.

MLA (9th ed.) Citation

Keuneman, Herbert, et al. Sri Lanka. 6th ed. APA Publications, 1991.