Mara, D. Duncan (David Duncan), 1944-, author
John Wliley & Sons , 1983
Buku Teks
edited by Richard Feachem, Michael McGarry, Duncan Mara
John Wiley & Sons, 1980
Buku Teks
John Wiley & Sons, 1977
Buku Teks
Hyde, Richard, author
E & FN Spon, 2000
Buku Teks
Trewartha, Glenn T., author
McGraw-Hill, 1954
Buku Teks