एपीए उद्धरण

Sirisena, D., Chong, Y., & Chin, T. (2020). An unusual presentation of ankylosing spondylitis. Singapore Med J.

शिकागो स्टाइल उद्धरण

Sirisena, Dinesh, Yong-Yeow Chong, और Teck-Yew Chin. "An Unusual Presentation of Ankylosing Spondylitis." Singapore Med J 2020.

एमएलए उद्धरण

Sirisena, Dinesh, Yong-Yeow Chong, और Teck-Yew Chin. "An Unusual Presentation of Ankylosing Spondylitis." Singapore Med J 2020.