Ruse, Michael, author
Routledge, 1994
Buku Teks SO
Ruse, Michael, author
Routledge, 1994
Buku Teks SO
Ruse, Michael, author
Cummings Publishing Company, 1982
Buku Teks
Darwin, Charles, author
New York The Modern Library [date of publication not identified],
Buku Teks
oleh M. Rusdi ... [and others]; editor, Sindu Galba
Departemen P & K , 1989
Buku Teks