Robertson, S. Ian, author
Problem solving
Psychology Press, 2001
 Buku Teks
Murry, John Middleton, author
The Problem of Style
Oxford University Press, 1956
 Buku Teks
Ayer, A. J. (Alfred Jules), 1910-1989, author
The Problem of knowledge
Penguin Books, 1956
 Buku Teks
Yulius Aris Widiantoro, author
Nihilisme sebagai problem eksistensial
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2009
 UI - Tesis (Open)
Eide, Arvid R., author
Engineering fundamentals and problem solving
McGraw-Hill, 2002
 Buku Teks
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