Howie, J. M. (1992). et al.
Chicago Style aipamenaHowie, John M. Et Al. World Scientific, Singapore, 1992.
MLA aipamenaHowie, John M. Et Al. 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
Howie, J. M. (1992). et al.
Chicago Style aipamenaHowie, John M. Et Al. World Scientific, Singapore, 1992.
MLA aipamenaHowie, John M. Et Al. 1992.