Cita APA (7th ed.)

Umer, T. C., Romanowska, J. E., & Kumaniecka, J. (2014). Austria. Dorling Kindersley Limited.

Cita Chicago (17th ed.)

Umer, Teresa Czerniewicz, Joanna Egert Romanowska, i Janina Kumaniecka. Austria. London: Dorling Kindersley Limited, 2014.

Cita MLA (9th ed.)

Umer, Teresa Czerniewicz, et al. Austria. Dorling Kindersley Limited, 2014.