APA
Frater, R. W. (2002). Chordal sparing mitral valve replacement. Journal of Heart Valve Disease, 8(1), 42-43.
MLA
Frater, R W.. "Chordal sparing mitral valve replacement." Journal of Heart Valve Disease 8.1 (2002): 42-43.
Chicago
Frater, R W.. "Chordal sparing mitral valve replacement." Journal of Heart Valve Disease 8, no. 1 (2002): 42-43.
Harvard
Frater, R. W. (2002) 'Chordal sparing mitral valve replacement' Journal of Heart Valve Disease 8(1), pp. 42-43.
Vancouver
Frater RW. Chordal sparing mitral valve replacement. Journal of Heart Valve Disease. 2002 ;8(1):42-43.