Nicod, Jean
Routledge & Kegan Paul, 1930
Buku Teks
Falconer, Kenneth, author
John Wiley & Sons, 1990
Buku Teks
Hilbert, David, author
Open Court, 1990
Buku Referensi
Jakob Andreas Baerentzen, author
Springer-Verlag, 2012
eBooks
Valentin E. Brimkov, Reneta P. Barneva, editors
Springer, 2012
eBooks