(1993). Cheb, Schwarzer Turm.
Tohutoru Kātū Chicago (17th ed.)Cheb, Schwarzer Turm. 1993.
Tohutoro MLA (9th ed.)Cheb, Schwarzer Turm. 1993.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.
Tohutoro APA (7th ed.)