Dyfyniad APA

Keating, D. (1978). Building contracts (4th ed.). Sweet & Maxwell.

Dyfyniad Arddull Chicago

Keating, Donald. Building Contracts. 4th ed. London: Sweet & Maxwell, 1978.

Dyfyniad MLA

Keating, Donald. Building Contracts. 4th ed. Sweet & Maxwell, 1978.

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