Gaya APA
Blackburn, G. (1978).
The IIlustrated Encylopedia of Ships, Boats, Vessels an other Water-Borne Craft .
London:
John Murray.
Gaya MLA
Blackburn, Graham.
"The IIlustrated Encylopedia of Ships, Boats, Vessels an other Water-Borne Craft".
London:
John Murray,
1978.
REF.