Lua APA (7ú heag.)

Não informado. (2002). Sheep & goat research journal. National Institute for Animal Agriculture.

Lua i Stíl Chicago (17ú heag.)

Não informado. Sheep & Goat Research Journal. Englewood, Colo: National Institute for Animal Agriculture, 2002.

Lua MLA (8ú heag.)

Não informado. Sheep & Goat Research Journal. National Institute for Animal Agriculture, 2002.

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