Biographical and bibliographical dictionary of the Italian printers ... 1968 (hdg.: Pentius, Jacobus; usage: Jacobinus de Pentiis, Jacomo di Penzi, Jacobus de Pentio de Leuco, Jac. da Lecco, Jacomo Penci da Lecho, Jacopo Pencio, Jacob de Leucho, Jacopo Penzio)
BM STC Italian 1465-1600 p. 909 (Pencio, Jacopo, da Lecco, Venice, 1496-1527)
Chronica delle vite de pontifici, 1507 colophon (Iacomo de Pinci da Lecco; Venice printer)
Polain 3668 (Jacques Penzi de Lecco)
Reuerendi fratris Baptistae Mantuani Carmelitae De patientia aurei libri tres, 1499 colophon (Iacobum de Leuco)
RLIN, 7/6/94 (hdg.: Pencio, Jacopo, fl. 1486-1527; usage: Jacobu[m] de Leucho, Iacobum Pentium de Leucho)
Short-title catalog of books printed in Italy ... 1970 v. 3, p. 547 (Pencio, Jacopi, da Lecco, Venice, 1501-1530)