APA (7e ed.) Bronvermelding

Johnson, M. (1992). The heart of the matter: What you really need to know about heart attack / Marilyn Johnson. Southeast Asia Publishing House.

Chicago (17e ed.) Bronvermelding

Johnson, Marilyn. The Heart of the Matter: What You Really Need to Know About Heart Attack / Marilyn Johnson. Singapore: Southeast Asia Publishing House, 1992.

MLA (9e ed.) Bronvermelding

Johnson, Marilyn. The Heart of the Matter: What You Really Need to Know About Heart Attack / Marilyn Johnson. Southeast Asia Publishing House, 1992.