Handbook of Blended LearningCurtis J. Bonk, Charles R. Graham, Jay Cross, Michael G. Moore · First published 2006Open the Tome
Dynamic skiametry in theory and practiceAndrew Jay Cross · First published 1911 · Latest edition 1915Open the Tome
A system of ocular skiametry including such portions of optometry as are pertinent to the use of the "shadow test" with the plane mirrorAndrew Jay Cross · First published 1903Open the Tome
