APA aipamena

BROWN, G. (1972). Survey Economic Principles Gray Brown. Richard D. Irwin.

Chicago Style aipamena

BROWN, Gray. Survey Economic Principles Gray Brown. Richard D. Irwin, 1972.

MLA aipamena

BROWN, Gray. Survey Economic Principles Gray Brown. Richard D. Irwin, 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.