Cushman, J. A., & Stainforth, R. M. (1945). The Foraminifera of the Cipero marl formation of Trinidad, British West Indies.
芝加哥风格引文Cushman, Joseph A., 与 R. M. Stainforth. The Foraminifera of the Cipero Marl Formation of Trinidad, British West Indies. Sharon, Mass, 1945.
MLA引文Cushman, Joseph A., 与 R. M. Stainforth. The Foraminifera of the Cipero Marl Formation of Trinidad, British West Indies. 1945.
警告：这些引文格式不一定是100％准确.