APA (7th ed.) Citation

Cohen, M. E. (2018). Take control of PDFpen 10: Also covers PDFpen for iPad & iPhone. Alt concepts Inc.

Chicago Style (17th ed.) Citation

Cohen, Michael E. Take Control of PDFpen 10: Also Covers PDFpen for IPad & IPhone. San Diego, CA: Alt concepts Inc, 2018.

MLA (9th ed.) Citation

Cohen, Michael E. Take Control of PDFpen 10: Also Covers PDFpen for IPad & IPhone. Alt concepts Inc, 2018.

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