Difficull clinical problems in psychiatry
edited by Malcolm Lader and Dieter Naber
Martin Dunitz, 1999
 Buku Teks SO
Eckstein, Harry
Internal war: problems and approaches / Harry Eckstein
The Free Press of Glencoe , 1964
 Buku Teks SO
Lattimore, Owen, 1900-
America and Asia : problems of today's war and the peace of tomorrow
Claremont Colleges, 1943
 Buku Teks
Mao, Tse-Tung
Strategic problems in the anti-Japanese guerrilla war
Foreign Languages Press, 1954
 Buku Teks SO
Lewis, Sharon Mantik
Medical surgical nursing: assessment and management of clinical problems
Mosby, 1996
 Buku Teks