Gaya APA
Laer, P Henry. (1956).
Philosophy of science .
Australia:
Duquesne.
Gaya Chicago
Laer, P Henry.
Philosophy of science.
Australia:
Duquesne,
1956.
Text.
Gaya MLA
Laer, P Henry.
Philosophy of science.
Australia:
Duquesne,
1956.
Text.
Gaya Turabian
Laer, P Henry.
Philosophy of science.
Australia:
Duquesne,
1956.
Print.