Cita APA (7a ed.)

Popov, A., Lakov, P., Iliev, E., & Zhecheva, M. (2018). Geography and economics: 9th grade : student's book. Anubis.

Cita Chicago Style (17a ed.)

Popov, A., P. Lakov, E. Iliev, y M. Zhecheva. Geography and Economics: 9th Grade : Student's Book. Sofija: Anubis, 2018.

Cita MLA (9a ed.)

Popov, A., et al. Geography and Economics: 9th Grade : Student's Book. Anubis, 2018.