Darlington, W. (1826). Florula cestrica: An essay towards a catalogue of the phænogamous plants, native and naturalized, growing in the vicinity of the borough of West-Chester, in Chester County, Pennsylvania ... To which is subjoined an Appendix of the useful cultivated plants of the same district. West-Chester, Penn.: Printed for the author by S. Siegfried.

Darlington, William. Florula Cestrica: An Essay Towards a Catalogue of the Phænogamous Plants, Native and Naturalized, Growing in the Vicinity of the Borough of West-Chester, in Chester County, Pennsylvania ... To Which Is Subjoined an Appendix of the Useful Cultivated Plants of the Same District. West-Chester, Penn.: Printed for the author by S. Siegfried, 1826.

Darlington, William. Florula Cestrica: An Essay Towards a Catalogue of the Phænogamous Plants, Native and Naturalized, Growing in the Vicinity of the Borough of West-Chester, in Chester County, Pennsylvania ... To Which Is Subjoined an Appendix of the Useful Cultivated Plants of the Same District. West-Chester, Penn.: Printed for the author by S. Siegfried, 1826.