Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Fol, V. (2003). Rock-cut caves with two entrances orthe model of the cosmos. Bulgarian Academy of Sciences.

Chicago Citation Edition Citation

Fol, Valeriia. Rock-cut Caves with Two Entrances Orthe Model of the Cosmos. Sofia: Bulgarian Academy of Sciences, 2003.

MLA Citation Edition Citation

Fol, Valeriia. Rock-cut Caves with Two Entrances Orthe Model of the Cosmos. Bulgarian Academy of Sciences, 2003.