Gaya APA
Roper, Peter. (1987).
A Practical Guide to Roofing .
London:
Internatonal Thomson Publishing Limited.
Gaya Chicago
Roper, Peter.
A Practical Guide to Roofing.
London:
Internatonal Thomson Publishing Limited,
1987.
Text.
Gaya MLA
Roper, Peter.
A Practical Guide to Roofing.
London:
Internatonal Thomson Publishing Limited,
1987.
Text.
Gaya Turabian
Roper, Peter.
A Practical Guide to Roofing.
London:
Internatonal Thomson Publishing Limited,
1987.
Print.