Gaya APA
Plumbe, A.J.. (1981).
Bullock cart haulage in Sri Lanka .
:
TRRL.
Gaya Chicago
Plumbe, A.J..
Bullock cart haulage in Sri Lanka.
:
TRRL,
1981.
Chart.
Gaya MLA
Plumbe, A.J..
Bullock cart haulage in Sri Lanka.
:
TRRL,
1981.
Chart.
Gaya Turabian
Plumbe, A.J..
Bullock cart haulage in Sri Lanka.
:
TRRL,
1981.
Chart.