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引文Ashworth, Edwin Thomas. Foraminifera from the Cretaceous of the Central Cordillera of Guatemala. The Ohio State University, 1974.
警告:這些引文格式不一定是100%准確.