	Authors	Year	Title
	Bisat	1952	The goniatite succession at Cowdale Clough, Barnoldswick, Yorkshire. Transactions of the Leeds Geologists Association, 6 (4): 155-181, fig.1-3, pl.1-3; Kendal.
	Moore	1936	The Bowland Shales from Pendle to Dinckley. Journal of the Manchester Geological Association,: 167-192, fig.1-3, pl.1-3; Manchester.