Gaya APA
The Physychal Universe. (2014).
New York:
McGraw-Hill.
Gaya Chicago
The Physychal Universe.
15.
New York:
McGraw-Hill,
2014.
Buku.
Gaya MLA
The Physychal Universe.
15.
New York:
McGraw-Hill,
2014.
Buku.
Gaya Turabian
The Physychal Universe.
New York:
McGraw-Hill,
2014.
Buku.