Hancock, J., Kennedy, W., & Cobban, W. (1993). A correlation of the Upper Albian to basal Coniacian sequences of northwest Europe, Texas and the United States Western Interior.

Hancock, J., W. Kennedy, and W. Cobban. A Correlation of the Upper Albian to Basal Coniacian Sequences of Northwest Europe, Texas and the United States Western Interior. 1993.

Hancock, J., et al. A Correlation of the Upper Albian to Basal Coniacian Sequences of Northwest Europe, Texas and the United States Western Interior. 1993.