"References". The Graffiti of Tikal: Tikal Report 31, Philadelphia: University of Pennsylvania Press, 1983, pp. 6-6. https://doi.org/10.9783/9781934536360.6
(1983). References. In The Graffiti of Tikal: Tikal Report 31 (pp. 6-6). Philadelphia: University of Pennsylvania Press. https://doi.org/10.9783/9781934536360.6
References. In: The Graffiti of Tikal: Tikal Report 31. Philadelphia: University of Pennsylvania Press; 1983. p.6-6. https://doi.org/10.9783/9781934536360.6