Gaya APA
Machen, J.
(1985).
Christianity and liberalism, repr. Cet.pertama 1923.
.
Grand Rapids:
Eerdmans.
Gaya MLA
Machen, J.Gresham.(1881-1937).
"Christianity and liberalism, repr. Cet.pertama 1923. ".
Grand Rapids:
Eerdmans,
1985.
Buku.