APA (7th ed.) Citation

Games Workshop. (2017). [Warhammer 40,000 map. [Black Library, Games Workshop Ltd.?].

Chicago Style (17th ed.) Citation

Games Workshop. [Warhammer 40,000 Map. [Nottingham, UK]: [Black Library, Games Workshop Ltd.?], 2017.

MLA (9th ed.) Citation

Games Workshop. [Warhammer 40,000 Map. [Black Library, Games Workshop Ltd.?], 2017.

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