APA (7th ed.) Citation

Cohen, M. (2020). Take Control of PDFpen, 2nd Edition (2nd edition.). Take Control Books.

Chicago Style (17th ed.) Citation

Cohen, Michael. Take Control of PDFpen, 2nd Edition. 2nd edition. Take Control Books, 2020.

MLA (9th ed.) Citation

Cohen, Michael. Take Control of PDFpen, 2nd Edition. 2nd edition. Take Control Books, 2020.

Warning: These citations may not always be 100% accurate.