7544 755 10 Baron, D N Primary Author mixed material 9794481106 Jakarta EGC 1990 suatu pendekatan praktek Arikunto, Suharsimi Primary Author Staubesand : Indrati Hadinata Translator mixed material 9795180185 Jakarta Rineka Cipta 2002 Suma-mur Primary Author Rossi Sanusi Additional Author mixed material Jakarta Gunung Agung 1981 Norman F Gant : F Gary Cunningham Primary Author Brahm U Pedit Translator mixed material 9789794488102 Jakarta EGC 2010