APA aipamena

higgins, M. (1987). intermediate grammar workbook 2. Longman.

Chicago Style aipamena

higgins, MUriel. Intermediate Grammar Workbook 2. Longman, 1987.

MLA aipamena

higgins, MUriel. Intermediate Grammar Workbook 2. Longman, 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.