APA aipamena

ARNELL, A. (1963). Standard Graphical Symbols. McGraw-Hill.

Chicago Style aipamena

ARNELL, Alvin. Standard Graphical Symbols. McGraw-Hill, 1963.

MLA aipamena

ARNELL, Alvin. Standard Graphical Symbols. McGraw-Hill, 1963.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.