Spilhaus, Athelstan
Creative Educational Society, Inc., 1967
Buku Teks
edited by Otoo Kinne
Wiley-Interscience, 1978
Buku Teks
edited by Otoo Kinne
Wiley-Interscience, 1978
Buku Teks
Simangunsong, Bonar, author
BPP Teknologi, 1996
Buku Teks
editor, Susanne Wasum-Rainer, Ingo Winkelmann, Katrin Tiroch
Springer, 2012
eBooks