Cite Them Right 11th edition - Harvard

Joshua M. Willman and Joshua M. Willman (2020) Beginning Py Qt : A Hands-on Approach to GUI Programming.

Chicago Manual of Style 17th edition (full note)

Joshua M. Willman, and Joshua M. Willman. Beginning Py Qt : A Hands-on Approach to GUI Programming.

American Psychological Association 7th edition

Joshua M. Willman, & Joshua M. Willman. (2020). Beginning Py Qt : A Hands-on Approach to GUI Programming.

Modern Language Association 9th edition

Joshua M. Willman, and Joshua M. Willman. Beginning Py Qt : A Hands-on Approach to GUI Programming. 2020.

ISO-690 (author-date, Deutsch)

JOSHUA M. WILLMAN and JOSHUA M. WILLMAN, 2020. Beginning Py Qt : A Hands-on Approach to GUI Programming

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