APA-čujuhus (7. p.)
Harper, J. C., & Manistre, B. E. (1952). The Ordovician rocks between Collon (Co. Louth) and Grangegeeth (Co. Meath).
Chicago-čujuhus (17. p.)
Harper, John C., juo B. E. Manistre. The Ordovician Rocks Between Collon (Co. Louth) and Grangegeeth (Co. Meath). Dublin, 1952.
MLA-čujuhus (9. p.)
Harper, John C., juo B. E. Manistre. The Ordovician Rocks Between Collon (Co. Louth) and Grangegeeth (Co. Meath). 1952.
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