Eric Freeman ... [et al.] Eric Freeman ... [et al.]. Eric Freeman ... [等] 著 David Freedman ... [et al.]. Erik Dahlman ... [et al.]. Erik Dahlman ... [et al.]著. Evan M. Berman ... [et al. Ruth Wageman ...[et al. Eric Armstrong ... [et al.]. Efraim Turban ... [et al.