Pacific Northwest Library Association. Reference Section, Todd, R., & Gilbert, E. S. (1930). Nineteenth century American publishers. Reference Section of the Pacific Northwest Library Association.
Chicago Style (17th ed.) CitationPacific Northwest Library Association. Reference Section, Ronald Todd, and Elizabeth Showacre Gilbert. Nineteenth Century American Publishers. [Seattle?: Reference Section of the Pacific Northwest Library Association, 1930.
MLA引文Pacific Northwest Library Association. Reference Section, et al. Nineteenth Century American Publishers. Reference Section of the Pacific Northwest Library Association, 1930.
警告：這些引文格式不一定是100％准確.