APA (7th ed.) Citation

Harkness Michael. (2023). Forty years of publication. Sciendo.

Chicago Style (17th ed.) Citation

Harkness Michael. Forty Years of Publication. Sciendo, 2023.

MLA (9th ed.) Citation

Harkness Michael. Forty Years of Publication. Sciendo, 2023.

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