Malaysia. Jabatan Perdana Menteri. (1990). Environmental Quality Report 1990. Kementerian Sains, Teknologi dan Alam Sekitar.
Chicago Style (17th ed.) CitationMalaysia. Jabatan Perdana Menteri. Environmental Quality Report 1990. Kuala Lumpur: Kementerian Sains, Teknologi dan Alam Sekitar, 1990.
MLA (8th ed.) CitationMalaysia. Jabatan Perdana Menteri. Environmental Quality Report 1990. Kementerian Sains, Teknologi dan Alam Sekitar, 1990.
Warning: These citations may not always be 100% accurate.