Esser, R. V. (1990). Between spheres: 30 march 1990-9 april 1990, National Museum of Fine Arts, Valletta, Malta / National Museum of Fine Arts, Valletta. [Verlag nicht ermittelbar].
Chicago-Zitierstil (17. Ausg.)Esser, Raniel Veronika. Between Spheres: 30 March 1990-9 April 1990, National Museum of Fine Arts, Valletta, Malta / National Museum of Fine Arts, Valletta. Valletta: [Verlag nicht ermittelbar], 1990.
MLA-Zitierstil (8. Ausg.)Esser, Raniel Veronika. Between Spheres: 30 March 1990-9 April 1990, National Museum of Fine Arts, Valletta, Malta / National Museum of Fine Arts, Valletta. [Verlag nicht ermittelbar], 1990.
警告：这些引文格式不一定是100％准确.