Cita APA (7th ed.)
Satterthwaite, L. (1944). Piedras Negras Archaeology: Architecture : Ball Courts : Part IV. University of Pennsylvania, University Museum.
Cita Chicago (17th ed.)
Satterthwaite, Linton. Piedras Negras Archaeology: Architecture : Ball Courts : Part IV. Filadelfia, EUA: University of Pennsylvania, University Museum, 1944.
Cita MLA (9th ed.)
Satterthwaite, Linton. Piedras Negras Archaeology: Architecture : Ball Courts : Part IV. University of Pennsylvania, University Museum, 1944.
Atenció: Aquestes cites poden no estar 100% correctes.