APA (7th ed.) Citation

(1988). Themenheft Qualitäts-Zirkel. Hogrefe [u.a.].

Chicago Style (17th ed.) Citation

Themenheft Qualitäts-Zirkel. Stuttgart: Hogrefe [u.a.], 1988.

MLA (9th ed.) Citation

Themenheft Qualitäts-Zirkel. Hogrefe [u.a.], 1988.

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