Παραπομπή σε μορφή APA (7η εκδ.)

Willis, B. (1997). Invisible images: The silent language of architecture and the selected works of Beverly Willis. [s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Willis, Beverly. Invisible Images: The Silent Language of Architecture and the Selected Works of Beverly Willis. [S.l.]: [s.n.], 1997.

Παραπομπή σε μορφή MLA (8th εκδ.)

Willis, Beverly. Invisible Images: The Silent Language of Architecture and the Selected Works of Beverly Willis. [s.n.], 1997.