Lua APA (7ú heag.)

Henkin, H. (1988). Drafting engineering contracts. Elsevier Applied Science.

Lua i Stíl Chicago (17ú heag.)

Henkin, Henry. Drafting Engineering Contracts. London ; New York: Elsevier Applied Science, 1988.

Lua MLA (8ú heag.)

Henkin, Henry. Drafting Engineering Contracts. Elsevier Applied Science, 1988.

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