Gaya APA
Heer, Friedrich. (1961).
The medieval world: Europe 1100-1350 / Friedrich Heer .
:
London: Weidenfeld and Nicolson.
Gaya Chicago
Heer, Friedrich.
The medieval world: Europe 1100-1350 / Friedrich Heer.
:
London: Weidenfeld and Nicolson,
1961.
Buku.
Gaya MLA
Heer, Friedrich.
The medieval world: Europe 1100-1350 / Friedrich Heer.
:
London: Weidenfeld and Nicolson,
1961.
Buku.
Gaya Turabian
Heer, Friedrich.
The medieval world: Europe 1100-1350 / Friedrich Heer.
:
London: Weidenfeld and Nicolson,
1961.
Buku.