APA

Bosev A. I., Mladenova E., Младенова Е. & Босев А. И. (1959). 15 years of the Septemvriiche - Dimitrov pioneer organization. : Foreign Lang. Press.

Chicago

Bosev Asen Ivanov, Mladenova Elena, Младенова Елена and Босев Асен Иванов. 1959. 15 years of the Septemvriiche - Dimitrov pioneer organization. : Foreign Lang. Press.

Harvard

Bosev A. I., Mladenova E., Младенова Е. and Босев А. И. (1959). 15 years of the Septemvriiche - Dimitrov pioneer organization. : Foreign Lang. Press.

MLA

Bosev Asen Ivanov, Mladenova Elena, Младенова Елена and Босев Асен Иванов. 15 years of the Septemvriiche - Dimitrov pioneer organization. : Foreign Lang. Press. 1959.