Chang, Chin-Liang, author
Academic Press, 1973
Buku Teks
Smarandache, Florentin, author
Hexis, 2005
Buku Teks
Mundici, Daniele, author
Springer, 2012
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Sagitra Tri Meizanda, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2023
UI - Skripsi Membership
Bergmann, Merrie
McGraw-Hill Publishing Company, 1990
Buku Teks