APA-referens (7:e uppl.)

Howard, R., Parry, L., Clatworthy, I., D'Souza, L., & Edgecombe, G. (2024). Palaeoscolecids from the Ludlow Series of Leintwardine, Herefordshire ( UK ): The latest occurrence of palaeoscolecids in the fossil record. Wiley.

Chicago-referens (17:e uppl.)

Howard, RJ, LA Parry, I. Clatworthy, L. D'Souza, och GD Edgecombe. Palaeoscolecids from the Ludlow Series of Leintwardine, Herefordshire ( UK ): The Latest Occurrence of Palaeoscolecids in the Fossil Record. Wiley, 2024.

MLA-referens (9:e uppl.)

Howard, RJ, et al. Palaeoscolecids from the Ludlow Series of Leintwardine, Herefordshire ( UK ): The Latest Occurrence of Palaeoscolecids in the Fossil Record. Wiley, 2024.

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