Gaya APA
Crofton, John Sir. (1983).
Respiratory disease (3rd. Ed.).
Singapore:
P.G. Pub.
Gaya Chicago
Crofton, John Sir.
Respiratory disease.
3rd. Ed.
Singapore:
P.G. Pub,
1983.
Text.
Gaya MLA
Crofton, John Sir.
Respiratory disease.
3rd. Ed.
Singapore:
P.G. Pub,
1983.
Text.
Gaya Turabian
Crofton, John Sir.
Respiratory disease.
3rd. Ed.
Singapore:
P.G. Pub,
1983.
Print.