Gaya APA

SCHWEIZER, . (1989). Waste monitoring: national seminar on hazardous waste management Ciloto, October 16-19, 1989 . : The State Minister for Population & Environment.

Gaya MLA

SCHWEIZER, . "Waste monitoring: national seminar on hazardous waste management Ciloto, October 16-19, 1989". : The State Minister for Population & Environment, 1989. Laporan.