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Vu และผู้แต่งคนอื่นๆ. (1999) Impacts of voluntary health insurance scheme on health care utilization in Vietnam . Chulalongkorn University/Bangkok.
Vu และผู้แต่งคนอื่นๆ. Impacts of voluntary health insurance scheme on health care utilization in Vietnam. . Bangkok:Chulalongkorn University, 1999.
Vu และผู้แต่งคนอื่นๆ. (1999) Impacts of voluntary health insurance scheme on health care utilization in Vietnam . Chulalongkorn University/Bangkok.