(2013). Guidelines on water quality assessment and management for tropical ponds. Centre for Urban Greenery and Ecology, National Parks Board.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Guidelines on Water Quality Assessment and Management for Tropical Ponds. Singapore: Centre for Urban Greenery and Ecology, National Parks Board, 2013.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Guidelines on Water Quality Assessment and Management for Tropical Ponds. Centre for Urban Greenery and Ecology, National Parks Board, 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.