Penggayaan APA
NAGEL, Ernest. ([s.a]).
The structure of science: .
London:
Routledge & Kegan Paul.
Chicago Style
NAGEL, Ernest.
The structure of science:.
London:
Routledge & Kegan Paul,
[s.a].
Buku.
MLA Style
NAGEL, Ernest.
The structure of science:.
London:
Routledge & Kegan Paul,
[s.a].
Buku.
Turabian Style
NAGEL, Ernest.
The structure of science:.
London:
Routledge & Kegan Paul,
[s.a].
Buku.