Article

Ab Rahman, Mohamad Azmi (1991) Simbolisme alam fizikal: Membaca simbol lautan dalam pantun melayu. Bicara Bahasa, 1/1. pp. 1-13. (Unpublished)

Monograph

Ahmad Radhi, Nungsari (1991) Consumer decision making on car purchases in Kedah. Other. Universiti Utara Malaysia, Sintok. (Unpublished)

Kanbur, Mandu G. and Yen, Siew Hwa and Katib, Mohamed Nasser (1991) Price trend of palm oil in Malaysia. Discussion Paper. Universiti Utara Malaysia, Sintok. (Unpublished)