Cita APA (7a ed.)

Ibrahim, H., & Cordes, K. A. (1993). Outdoor recreation. Brown & Benchmark.

Cita Chicago Style (17a ed.)

Ibrahim, Hilmi, y Kathleen A. Cordes. Outdoor Recreation. Madison, Wisconsin [etc.]: Brown & Benchmark, 1993.

Cita MLA (9a ed.)

Ibrahim, Hilmi, y Kathleen A. Cordes. Outdoor Recreation. Brown & Benchmark, 1993.