Invertir en valorBruce C.N. Greenwald, Judd Kahn, Paul D. Sonkin, Michael van Biema, Amelia Cabedo Filizzola · First published 2017Open the Tome
Theoretical ApproachesRoy L. Johnston, Olivier Kahn, D. Michael P. Mingos, O. Sonnich Mortensen · First published 2013Open the Tome