5 1 20 Riduwan Primary Author mixed material 9786028361125 Bandung Alpfabeta 2014 cover_metode_dan_teknik_menyusun_proposal_penelitian.jpg Riduwan Primary Author mixed material 9798433084 Bandung Alfabeta 2006 WhatsApp_Image_2022-12-15_at_16.26.38.jpeg.jpeg Riduwan Primary Author Prana Dwija Iswara Additional Author mixed material 9798433084 Bandung Alfabeta 2012 cover_dasar_dasar_statistika_edisi_revisi.jpg Riduwan Primary Author Prana Dwija Iswara Additional Author mixed material 9798433084 Bandung Alfabeta 2003 916742b2-841e-47e2-9944-5097e0a5356d.jpg.jpg Husdarta, H.J.S. Primary Author Riduwan Additional Author mixed material 9786028361866 Bandung Alfabeta 2011 cover_psikologi_olahraga.jpg