Flower, William Henry, author
Routledge/Thoemmes Press, 1996
Buku Referensi
Acland, Henry W., author
Routledge/Thoemmes Press, 1996
Buku Referensi
Barbara Rangel, Jose Manuel Amorim Faria, Vitor Abrantes, editors
Springer Nature, 2019
eBooks
Dean, David, author
Routledge, 1996
Buku Teks
Cuypers, Pierre
Pallas, 2013
Buku Teks