Não informado. Philippine Journal of Surgery, Obstetrics and Gynecology. Philippine College of Surgeons.
Citação do estilo Chicago (17ª ed.)Não informado. Philippine Journal of Surgery, Obstetrics and Gynecology. Manila: Philippine College of Surgeons.
Citação MLA (8ª ed.)Não informado. Philippine Journal of Surgery, Obstetrics and Gynecology. Philippine College of Surgeons.
警告：这些引文格式不一定是100％准确.