Lee, S. H., Ong, Z. H., Soh, S. G., & Seshanna, S. (2008). Adequacy of Singapore social security system for the elderly: A comparative study with four other countries.
استشهاد بنمط شيكاغوLee, Sin Han., Zhi Hao Ong, Seok Gek Soh, و Shubhasree Seshanna. Adequacy of Singapore Social Security System for the Elderly: A Comparative Study With Four Other Countries. 2008.
MLA استشهادLee, Sin Han., Zhi Hao Ong, Seok Gek Soh, و Shubhasree Seshanna. Adequacy of Singapore Social Security System for the Elderly: A Comparative Study With Four Other Countries. 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.