Cita APA (7th ed.)
Schreck, H. C., & Barrett, D. B. (1987). Unreached peoples: Clarifying the task. MARC.
Cita Chicago (17th ed.)
Schreck, Harley Carl, i David B. Barrett. Unreached Peoples: Clarifying the Task. Birmingham: MARC, 1987.
Cita MLA (9th ed.)
Schreck, Harley Carl, i David B. Barrett. Unreached Peoples: Clarifying the Task. MARC, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.