Biber, D., Conrad, S., & Leech, G. N. (2002). Longman student grammar of spoken and written English. Pearson Education Limited.
Citace podle Chicago (17th ed.)Biber, Douglas, Susan Conrad, a Geoffrey N. Leech. Longman Student Grammar of Spoken and Written English. Londres: Pearson Education Limited, 2002.
Citace podle MLA (9th ed.)Biber, Douglas, et al. Longman Student Grammar of Spoken and Written English. Pearson Education Limited, 2002.
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