APA (7th ed.) Citation

Piechota, A. (1973). Eastern Europe telecommunications seminar. [s. n.].

Chicago Style (17th ed.) Citation

Piechota, A. Eastern Europe Telecommunications Seminar. [S. l.]: [s. n.], 1973.

MLA (9th ed.) Citation

Piechota, A. Eastern Europe Telecommunications Seminar. [s. n.], 1973.

Warning: These citations may not always be 100% accurate.