Polycarpus Swantoro
Kepustakaan Populer Gramedia, 2019
Buku Teks
Larsen, Jen
HarperTeen, an imprint of HarperCollinsPublishers, 2015
Buku Teks
S.l. : s.n. 19-,
Buku Teks
Mangan, James T.
Prentice-Hall, 1963
Buku Teks
Aste, Tomaso
Taylor and Francis, 2008
Buku Teks