APA citiranje

McDonald, A., Harris, A., Jefferson, K., Marshall, J., & McDonald, L. (1971). Association of prolapse of posterior cusp of mitral valve and atrial septal defect.

Citação norma Chicago

McDonald, A., A. Harris, K. Jefferson, J. Marshall, and L. McDonald. Association of Prolapse of Posterior Cusp of Mitral Valve and Atrial Septal Defect. 1971.

MLA citiranje

McDonald, A., et al. Association of Prolapse of Posterior Cusp of Mitral Valve and Atrial Septal Defect. 1971.