Schaefer, Charles E. : Ages & stages [OverDrive/Libby electronic resource] a parent's guide to normal childhood development / Charles E. Schaefer, Theresa Foy DiGeronimo.
Schaefer, H. (Hans) : Software testing foundations : a study guide for the certified tester exam / by Andreas Spillner, Tilo Linz, Hans Schaefer. [O'Reilly electronic resource]
Schaefer, Markus, / author. : IBM System Storage Tape Library guide for open systems / Larry Coyne, Sandor Alavari, Simon Browne, Chris Hoffmann, Leticia Munoz, Markus Schaefer. [O'Reilly electronic resources]
Schaefer, Michael (Film producer) : Morgan [(Blu-ray) videorecording] / Twentieth Century Fox presents ; produced by Ridley Scott, Michael Schaefer, Mark Huffam ; written by Seth Owen ; directed by Luke Scott.