Cita APA (7a ed.)

Drumnikov, J., Kirsch, S., & Stojanov, N. (1972). Das fliegende Regenschirmchen. Bulgarski Hudoshnik.

Cita Chicago Style (17a ed.)

Drumnikov, Jordan, Sarah Kirsch, y Nikolaj Stojanov. Das Fliegende Regenschirmchen. Sofia: Bulgarski Hudoshnik, 1972.

Cita MLA (8a ed.)

Drumnikov, Jordan, et al. Das Fliegende Regenschirmchen. Bulgarski Hudoshnik, 1972.