Hedley RH (1963). "Cement and iron in the arenaceious foraminifera". Micropaleontology. 9 (4). The Micropaleontology Project, Inc.: 433–441. doi:10.2307/1484505. JSTOR1484505.
Hedley RH (1963). "Cement and iron in the arenaceious foraminifera". Micropaleontology. 9 (4). The Micropaleontology Project, Inc.: 433–441. doi:10.2307/1484505. JSTOR1484505.