Gupta, S.K., editor
Technological innovations in major world oil crops: volume 2, perspectives
[Springer, ], 2012
 eBooks
The World's major languages
edited by Bernard Comrie
Routledge, 1991
 Buku Referensi
Allen, Roy
Major airports of the world
Ian Allan, 1977
 Buku Referensi
The World's major languages
edited by Bernard Comrie
Oxford University Press, 1987
 Buku Teks SO
Innovations for sustainable development from Indonesia to the world
Business Innovations Center (BIC), 2016
 Buku Teks SO