ebrary, Inc, & Niskanen, K. (2012). Mechanics of paper products. Walter de Gruyter GmbH.
芝加哥风格引文ebrary, Inc, 与 Kaarlo Niskanen. Mechanics of Paper Products. Berlin ; Boston: Walter de Gruyter GmbH, 2012.
MLA引文ebrary, Inc, 与 Kaarlo Niskanen. Mechanics of Paper Products. Walter de Gruyter GmbH, 2012.
警告：这些引文格式不一定是100％准确.