APA (7th ed.) Citation

(1954). ČSN 34 5550 Signs on Electric Objects. s. n.

Chicago Style (17th ed.) Citation

ČSN 34 5550 Signs on Electric Objects. S. l: s. n, 1954.

MLA (9th ed.) Citation

ČSN 34 5550 Signs on Electric Objects. s. n, 1954.

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