Cita APA (7a ed.)

Watchtower Bible and Tract Society of New York & International Bible Students Association. (1977). La vida sí tiene propósito. Watchtower Bible and Tract Society of New York : International Bible Students Association.

Cita Chicago Style (17a ed.)

Watchtower Bible and Tract Society of New York y International Bible Students Association. La Vida Sí Tiene Propósito. New York: Watchtower Bible and Tract Society of New York : International Bible Students Association, 1977.

Cita MLA (9a ed.)

Watchtower Bible and Tract Society of New York y International Bible Students Association. La Vida Sí Tiene Propósito. Watchtower Bible and Tract Society of New York : International Bible Students Association, 1977.