APA-referens (7:e uppl.)

Xenidis, C., & Xenidis, L. (1994). Käthe Kruse I.D. Guide: How to Recognize the Early Kathe Kruse Models 1910-1962 with a key to their rarities ; plus ; extra-value features you might not notice. Theriault.

Chicago-referens (17:e uppl.)

Xenidis, Christa, och Lotte Xenidis. Käthe Kruse I.D. Guide: How to Recognize the Early Kathe Kruse Models 1910-1962 with a Key to Their Rarities ; Plus ; Extra-value Features You Might Not Notice. Annapolis, Maryland: Theriault, 1994.

MLA-referens (8:e uppl.)

Xenidis, Christa, och Lotte Xenidis. Käthe Kruse I.D. Guide: How to Recognize the Early Kathe Kruse Models 1910-1962 with a Key to Their Rarities ; Plus ; Extra-value Features You Might Not Notice. Theriault, 1994.