APA (7th ed.) Citation

Greif, M. 200 challenging chess puzzles. Goodwill Publishing House.

Chicago Style (17th ed.) Citation

Greif, Martin. 200 Challenging Chess Puzzles. New Delhi: Goodwill Publishing House.

MLA (9th ed.) Citation

Greif, Martin. 200 Challenging Chess Puzzles. Goodwill Publishing House.

Warning: These citations may not always be 100% accurate.