Ong, B. N. (1993). The practice of health services research ([1st ed.].). Chapman and Hall.
Cita Chicago Style (17a ed.)Ong, Bie Nio. The Practice of Health Services Research. [1st ed.]. London [etc.]: Chapman and Hall, 1993.
Cita MLA (9a ed.)Ong, Bie Nio. The Practice of Health Services Research. [1st ed.]. Chapman and Hall, 1993.
Precaución: Estas citas no son 100% exactas.