Lee, K. C., Ngoh, G. L., Yap, A., & Wong, S. (1998). Times English grammar & usage (3rd ed.). Federal Publications.
Lua i Stíl Chicago (17ú heag.)Lee, Kok Cheong, Geok Lun Ngoh, Arthur Yap, agus Simon Wong. Times English Grammar & Usage. 3rd ed. Singapore: Federal Publications, 1998.
Lua MLA (9ú heag.)Lee, Kok Cheong, et al. Times English Grammar & Usage. 3rd ed. Federal Publications, 1998.
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