APA (7th ed.) Citation

Cobb, D. (1978). Puzzles for english practice: PEP 2. Longman.

Chicago Style (17th ed.) Citation

Cobb, David. Puzzles for English Practice: PEP 2. Londres: Longman, 1978.

MLA (9th ed.) Citation

Cobb, David. Puzzles for English Practice: PEP 2. Longman, 1978.