Martin, William B
Quality customer service : cara jitu memikat hati pelanggan
Jakarta, 2005
 Buku Teks
Interpersonal dynamics: essays and readings on human internaction
Warren G. Bennis; Edgar H. Schei; and David E. Berlew
The Dorsey Press, 1964
 Buku Teks
R. Soeprapto, author
Hubungan internasional: sistem, interaksi dan perilaku
RajaGrafindo Persada, 1997
 Buku Teks
Ketjenderungan perkembangan internasional 1971-1981 / Alfian ... [et al.]
Lembaga Ilmu Pengetahuan Indonesia , 1971
 Buku Teks
Brockway, Thomas P.
Basic documents in United States foreign policy / Thomas P. Brockway
D. Van Nostrand Company, Inc. , 1957
 Buku Teks