Vandenberg, Maritz, author
Academy Editions , 1997
Buku Teks
Knapp, Stephen, author
Pockport Pub, 1998
Buku Referensi
Wurm, Jan, author
Birkhal'user, 2007
Buku Teks
Forch, Matthias, author
Springer Nature, 2019
eBooks
Vandenberg, Maritz, author
Academic Edition, 1997
Buku Teks