Cita APA (7th ed.)

Calleja, H. B., & Sibulo, A. S. J. (1996). The leading edge in cardiology 2. St. Luke's Heart Institution.

Cita Chicago (17th ed.)

Calleja, Homobono B., i Antonio S. Jr Sibulo. The Leading Edge in Cardiology 2. Metro Manila: St. Luke's Heart Institution, 1996.

Cita MLA (9th ed.)

Calleja, Homobono B., i Antonio S. Jr Sibulo. The Leading Edge in Cardiology 2. St. Luke's Heart Institution, 1996.