Bardovi-Harlig, K. (1997). Another piece of the puzzle: The emergence of the present perfect. Language Learning, 47(3), 375-422.
Hinkel, E. (1992). L2 tense and time reference. TESOL Quarterly, 26(3), 557-572.
Hinkel, E. (1997). The past tense and temporal verb meanings in a contextual framework. TESOL Quarterly, 31(2), 289-313.
Hocking, B. D. (1974). Tense, 'sequence of tenses', and 'indirect speech' in English teaching. ELT Journal, 28(3), 213-219.
Larsen-Freeman, D., Kuehn, T., and Haccius, M. (2003). Helping students make appropriate English verb tense-aspect choices. TESOL Journal, 11 (4), 3-9.
Lee, E. J. (2001). Interlanguage development by two Korean speakers of English with a focus on temporality. Language Learning, 51(4), 591-633.
Moy, R. (1977). Contextual factors in the use of the present perfect. TESOL Quarterly, 11(3), 303-309.
Robison, R. (1995). The aspect hypothesis revisited: a cross-sectional study of tense and aspect marking in interlanguage. Applied Linguistics, 16 (3), 344-370.
Shirai, Y. and Kurono, A. (1998). The acquisition of tense-aspect marking in Japanese as a second language. Language learning, 48(2), 245-279.
Slabakova, R. (2002). Review article: Recent research on the acquisition of aspect: an embarrassment of riches? Second Language Research, 18 (2), 172-188.
Svalberg, A. (1986). Teaching tense and aspect: a systematic approach. ELT Journal, 40(2), 136-145.
Svalberg, A. (1995). Meanings into pictures: Icons for teaching grammar. Language Awareness, 4(2), 65-87.
Tamada, Y. (1997). How should we teach Japanese learners the present perfect? ERIC Document, ED 406 832.
Tregidgo, P. S. (1974). English tense usage: A Bull's-eye view. ELT Journal, 28(2), 97-107.
Tregidgo, P. S. (1979). Tense subordination. ELT Journal, 33(3), 191-197.
Tregidgo, P. S. (1984). How far have we got with the present perfect?. ELT Journal, 38(4), 286-289.
Tregidgo, P. S. (1987). Correspondence: from P.S. Tregidgo. ELT Journal, 41(2), 152-153.