De libro rationis Guillelmi de Erqueto.
[Recognovit] Joseph Petit.
APA Citation
Guillaume d'Ercuis, 1. century., Petit, J., Petit, J. (1900). De libro rationis Guillelmi de Erqueto. Lutetiae Parisiorum: A. Picard filiusque.
MLA Citation
Guillaume d'Ercuis, 13th century, Joseph Petit, and Joseph Petit. De Libro Rationis Guillelmi De Erqueto. Lutetiae Parisiorum: A. Picard filiusque, 1900.
Warning: These citations may not always be complete (especially for serials).