Gaya APA
An introduction to paleobotany. (1947).
New York:
Mc Graw Hill.
Gaya Chicago
An introduction to paleobotany.
.
New York:
Mc Graw Hill,
1947.
Buku.
Gaya MLA
An introduction to paleobotany.
.
New York:
Mc Graw Hill,
1947.
Buku.
Gaya Turabian
An introduction to paleobotany.
New York:
Mc Graw Hill,
1947.
Buku.