Bradshaw, Michael
Contemporary world regional geography : global connections local voices
McGraw-Hill, 2012
 Buku Teks
Chako, George K
Applied operations research/ George K Chacko
North-Holland, 1976
 Buku Teks
Chako, George K
Applied operations research/ George K Chacko
North-Holland, 1976
 Buku Teks
Guiltinan, Joseph P.
Marketing management strategies and programs / Joseph P. Guiltinan and Gordon W. Paul
McGraw-Hill , 1985
 Buku Teks
Guiltinan, Joseph P.
Marketing management: strategies and programs/Joseph P. Guiltinan, Gordon W. Paul
New York McGraw-Hill 1983,
 Buku Teks