Cohen, M. (2018). Take Control of PDFpen 10 (1st edition.). Take Control Books.
Cita Chicago Style (17a ed.)Cohen, Michael. Take Control of PDFpen 10. 1st edition. Take Control Books, 2018.
Cita MLA (9a ed.)Cohen, Michael. Take Control of PDFpen 10. 1st edition. Take Control Books, 2018.
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