?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Dwi+Hartono&rft.au=Bambang%2C+Dwi+Hartono&rft.aulast=Bambang&rft.btitle=LANGIT-LANGIT+HARAPAN&rft.isbn=978-602-48225-3-8&rft.genre=book