Cita APA (7a ed.)

Harvard Medical School & Harvard Medical School. Health Publications Group. (1990). Harvard heart letter: From Harvard Medical School. Harvard Medical School Health Publications Group.

Cita Chicago Style (17a ed.)

Harvard Medical School y Harvard Medical School. Health Publications Group. Harvard Heart Letter: From Harvard Medical School. Boston, MA: Harvard Medical School Health Publications Group, 1990.

Cita MLA (8a ed.)

Harvard Medical School y Harvard Medical School. Health Publications Group. Harvard Heart Letter: From Harvard Medical School. Harvard Medical School Health Publications Group, 1990.