20 1 10 Mulgrom, Paul Additional Author Jhon Roberts Additional Author mixed material 0132246503 New Jersey Prentice Hall, Englewood Cliffs 1992 Jhon, Floyd. Beams. Additional Author mixed material 9796837374 Jakarta Gramedia 2004 Beams, Floyd A. Additional Author Jhon Additional Author mixed material 9796837374 Jakarta Indeks 2004 Ryans, Jhon K. Additional Author mixed material USA Jhon Wely 1967 Locyer, Keith Additional Author Alan Muhleman Additional Author Jhon Oakland Additional Author mixed material 0273028731 Jakarta PT. Elek Media Komputindo 1999 Spiegel, Murry R. Additional Author Jhon Schiller Additional Author R. Alu Srinivasan Additional Author mixed material 9797816125 Jakarta Erlangga 2004 Pierce, Jon L. Additional Author Jhon W. Newstrom Additional Author mixed material 9780071263764 New York McGraw-Hill 2008 Romney, Marshall B. Additional Author Paul Jhon Steinbart Additional Author mixed material 9780135009376 New York Pearson 2009 Walker, Orville C. Additional Author Jhon W. Mullins Additional Author Jean Claude Mullins Additional Author mixed material 9780071263917 New York McGraw-Hill 2008 Dwyer, F. Robert Additional Author Jhon F. Tanner Jr Additional Author mixed material 9780071263436 New York McGraw-Hill 2009