APA (7th ed.) Citation

Cohen, M. E. (2021). Take Control of PDFpen, 3rd Edition. Take Control Books.

Chicago Style (17th ed.) Citation

Cohen, Michael E. Take Control of PDFpen, 3rd Edition. [Erscheinungsort nicht ermittelbar]: Take Control Books, 2021.

MLA (9th ed.) Citation

Cohen, Michael E. Take Control of PDFpen, 3rd Edition. Take Control Books, 2021.

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