APA aipamena

GORDON, J. (1979). Structures Why Things Don't Fall Down. Pitman.

Chicago Style aipamena

GORDON, J.E. Structures Why Things Don't Fall Down. Pitman, 1979.

MLA aipamena

GORDON, J.E. Structures Why Things Don't Fall Down. Pitman, 1979.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.