Lulf, H. (1999). Implementation of compliance with the Basel convention on the control of transboundary movements of hazardous wastes and their disposal (1989) in three selected Southeast Asian countries (Singapore, Malaysia and Philippines).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lulf, Heidrun. Implementation of Compliance with the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal (1989) in Three Selected Southeast Asian Countries (Singapore, Malaysia and Philippines). 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lulf, Heidrun. Implementation of Compliance with the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal (1989) in Three Selected Southeast Asian Countries (Singapore, Malaysia and Philippines). 1999.