APA Style

Leech, D, B, S, C, A, G. (2002). Longman Student Grammar of Spoken and Written English (First Edition). Harlow, England: Longman (an imprint of Pearson Education).

MLA Style

Leech, Douglas, Biber,, Susan, Conrad,, And, Geoffrey. "Longman Student Grammar of Spoken and Written English". First Edition Harlow, England: Longman (an imprint of Pearson Education), 2002. BOOK.