6 1 20 Teori, Konsep, dan Rencana Proposal Nurlina T. Muhyiddin Primary Author M. Irfan Tarmizi Additional Author Anna Yulianita Additional Author mixed material 9789790617438 Jakarta Salemba Empat 2017 BTS_20180522_0018.jpg.jpg Irfan Nursasmito Primary Author mixed material Yogyakarta Badan Penerbit AMA 1983 za__20171123_0004.jpg.jpg Kumpulan Soal dan Jawabannya Zaki Baridwan Primary Author Irfan Nursasmito Additional Author mixed material Yogyakarta BPFE Yogyakarta 1981 BTS_20171123_0016.jpg.jpg Mas'ud Primary Author Irfan Nursasmito Additional Author mixed material Yogyakarta BPFE Yogyakarta 1982 Toherahmad_20171122_0026.jpg.jpg Irfan Primary Author mixed material 9798031245 Jakarta Penebar Swadaya 1991 input1_20170824_0038.jpg.jpg Panduan untuk Penelitian dan Critical Thinking Stephen S. Carey Primary Author Irfan M Zakkie Translator mixed material 9789791305969 Bandung Nusa Media 2015 IMG_20170801_0025.jpg.jpg