Kronenfeld, M. (1985). EPA Index: A Key to U.S. Environmental Protection Agency Reports and Superintendent of Documents and NTIS Numbers.
استشهاد بنمط شيكاغوKronenfeld, Michael. EPA Index: A Key to U.S. Environmental Protection Agency Reports and Superintendent of Documents and NTIS Numbers. 1985.
MLA استشهادKronenfeld, Michael. EPA Index: A Key to U.S. Environmental Protection Agency Reports and Superintendent of Documents and NTIS Numbers. 1985.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.