APA (7th ed.) Citation

Willner, W. (2020). What is an alliance? Pensoft Publishers.

Chicago Style (17th ed.) Citation

Willner, Wolfgang. What Is an Alliance? Pensoft Publishers, 2020.

MLA (9th ed.) Citation

Willner, Wolfgang. What Is an Alliance? Pensoft Publishers, 2020.

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