Ary Ginanjar Agustian, author
ARGA, 2006
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Kaelany H.D., author
Midada Rahma Press, 2012
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Galuh Nurul Anisyah Iryantie, author
Fakultas Psikologi Universitas Indonesia, 2023
UI - Skripsi (Membership)
Irastuty, author
2001
UI - Tesis (Membership)
Kynge, James
Mizan, 2007
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