APA (7th ed.) Citation

Ko, Y., & Ong, H. Elderly man with abdominal pain. Elsevier.

Chicago Style (17th ed.) Citation

Ko, Ying‐Chih, and Hooi‐Nee Ong. Elderly Man with Abdominal Pain. Elsevier.

MLA (9th ed.) Citation

Ko, Ying‐Chih, and Hooi‐Nee Ong. Elderly Man with Abdominal Pain. Elsevier.

Warning: These citations may not always be 100% accurate.