Ashworth, E. T. (1974). Foraminifera from the cretaceous of the central cordillera of Guatemala. The Ohio State University.
Chicago Style (17th ed.) CitationAshworth, Edwin Thomas. Foraminifera from the Cretaceous of the Central Cordillera of Guatemala. Ohio: The Ohio State University, 1974.
MLA (8th ed.) CitationAshworth, Edwin Thomas. Foraminifera from the Cretaceous of the Central Cordillera of Guatemala. The Ohio State University, 1974.
Warning: These citations may not always be 100% accurate.