John Wiley & Sons, 1954
Buku Teks
Carlberg, Michael
[Springer, Springer], 2012
eBooks
Ohio State University Press, 2000
Buku Teks
Wicksell, Knut
George Routledge and Sons , 1946
Buku Teks SO
Siregar, Boanerges Desryanto
Fakultas Teknik Universitas Indonesia, 2019
UI - Tesis Membership