Cita APA (7th ed.)

Bethea, D. C. (1973). Introductory maternity nursing. Lippincott.

Cita Chicago (17th ed.)

Bethea, Doris C. Introductory Maternity Nursing. Philadelphia: Lippincott, 1973.

Cita MLA (9th ed.)

Bethea, Doris C. Introductory Maternity Nursing. Lippincott, 1973.