Nugroho Notosusanto
Generations in Indonesian
Departemen of Defences and Security Centre for Armed Forces History, 1974
 Buku Teks
Wright, Judith, 1915-2000
The Generations of men
Oxford University Press, 1970
 Buku Teks
Wright, Judith, 1915-2000
The generations of men
Oxford University Press, 1964
 Buku Teks
Wright, Judith, 1915-2000
The Generations of men
Oxford University Press, 1967
 Buku Teks
Zemke, Ron
Generations at work: managing the clash of veterans, boomers, xers, and nexters in your workplace
[American Management Association, ], 2000
 eBooks