APA (7th ed.) Citation

(1993). 20th Waigani Seminar 1993 Programme: From Rio to Rai, Environment and development ; 22-27 August 1993 University of papua New Guinea. University of Papua New Guinea.

Chicago Style (17th ed.) Citation

20th Waigani Seminar 1993 Programme: From Rio to Rai, Environment and Development ; 22-27 August 1993 University of Papua New Guinea. Waigani: University of Papua New Guinea, 1993.

MLA (9th ed.) Citation

20th Waigani Seminar 1993 Programme: From Rio to Rai, Environment and Development ; 22-27 August 1993 University of Papua New Guinea. University of Papua New Guinea, 1993.