HARDWICK, H. (2003). WORDS ARE IMPORTANT- BOOK 2 (1st.). WHEELER PUBLISHING.
Chicago Style aipamenaHARDWICK, H.C. WORDS ARE IMPORTANT- BOOK 2. 1st. ALLAHABAD: WHEELER PUBLISHING, 2003.
MLA aipamenaHARDWICK, H.C. WORDS ARE IMPORTANT- BOOK 2. 1st. WHEELER PUBLISHING, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.