Pacific Northwest Library Association. Reference Section, Todd, R., & Gilbert, E. S. (1930). Nineteenth century American publishers. Reference Section of the Pacific Northwest Library Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPacific Northwest Library Association. Reference Section, Ronald Todd, और Elizabeth Showacre Gilbert. Nineteenth Century American Publishers. [Seattle?: Reference Section of the Pacific Northwest Library Association, 1930.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPacific Northwest Library Association. Reference Section, et al. Nineteenth Century American Publishers. Reference Section of the Pacific Northwest Library Association, 1930.
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