Cita APA (7a ed.)

Trik, H., & Kampen, M. E. (1983). The Graffiti of Tikal: Tikal Report 31. University Museum, University of Pennsylvania.

Cita Chicago Style (17a ed.)

Trik, Helen, y M. E. Kampen. The Graffiti of Tikal: Tikal Report 31. Philadelphia: University Museum, University of Pennsylvania, 1983.

Cita MLA (8a ed.)

Trik, Helen, y M. E. Kampen. The Graffiti of Tikal: Tikal Report 31. University Museum, University of Pennsylvania, 1983.