Longman Student Grammar of Spoken and Written English Longman Student Grammar of Spoken and Written English 5.01 2002
Longman Dictionary of American English (Dictionary (Longman)) Longman Dictionary of American English (Dictionary (Longman)) 5 readers 2000
Longman Dictionary of Contemporary English (LDOC) Longman Dictionary of Contemporary English (LDOC) 3 readers 1995
Longman Handy Learner's Dictionary of American English (LHLD) Longman Handy Learner's Dictionary of American English (LHLD) 2 readers 2000
Longman Photo Dictionary of American English Longman Photo Dictionary of American English 1 readers 2002