APA
Chambers, J. & Shah, P. M. (1998). Recommendations for the echocardiographic assessment of replacement heart values. Journal of Heart Valve Disease, 4(1), 9-13.
MLA
Chambers, J and P M. Shah. "Recommendations for the echocardiographic assessment of replacement heart values." Journal of Heart Valve Disease 4.1 (1998): 9-13.
Chicago
Chambers, J and P M. Shah. "Recommendations for the echocardiographic assessment of replacement heart values." Journal of Heart Valve Disease 4, no. 1 (1998): 9-13.
Harvard
Chambers, J. and Shah, P. M. (1998) 'Recommendations for the echocardiographic assessment of replacement heart values' Journal of Heart Valve Disease 4(1), pp. 9-13.
Vancouver
Chambers J, Shah PM. Recommendations for the echocardiographic assessment of replacement heart values. Journal of Heart Valve Disease. 1998 ;4(1):9-13.