Lua APA (7ú heag.)

PUFFETT, R. (1990). Plumbing Services Volume 1, Basic Skill Water Supply Rj Puffett, Lj. Hossack. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

PUFFETT, RJ. Plumbing Services Volume 1, Basic Skill Water Supply Rj Puffett, Lj. Hossack. McGraw-Hill, 1990.

Lua MLA (8ú heag.)

PUFFETT, RJ. Plumbing Services Volume 1, Basic Skill Water Supply Rj Puffett, Lj. Hossack. McGraw-Hill, 1990.

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