एपीए उद्धरण

(2019). Proceedings of the World Society of Cardiovascular and Thoracic Surgeons 29th Annual Congress, Sofia, Bulgaria, 2019: Sofia, Bulgaria. 6-8 September 2019. J Cardiothorac Surg.

शिकागो स्टाइल उद्धरण

"Proceedings of the World Society of Cardiovascular and Thoracic Surgeons 29th Annual Congress, Sofia, Bulgaria, 2019: Sofia, Bulgaria. 6-8 September 2019." J Cardiothorac Surg 2019.

एमएलए उद्धरण

"Proceedings of the World Society of Cardiovascular and Thoracic Surgeons 29th Annual Congress, Sofia, Bulgaria, 2019: Sofia, Bulgaria. 6-8 September 2019." J Cardiothorac Surg 2019.