Lua APA (7ú heag.)
ebrary, Inc, & Petroni, N. T. (2009). Highway trust fund: Background, issues and projects. Nova Science.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Nelson T. Petroni. Highway Trust Fund: Background, Issues and Projects. New York: Nova Science, 2009.
Lua MLA (9ú heag.)
ebrary, Inc, agus Nelson T. Petroni. Highway Trust Fund: Background, Issues and Projects. Nova Science, 2009.
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