APA (7th ed.) Citation

Castleden, S. (2017). 1: 500 000 on 1:1 (the charts that guided the wings).

Chicago Style (17th ed.) Citation

Castleden, Susanna. 1: 500 000 on 1:1 (the Charts That Guided the Wings). 2017.

MLA (9th ed.) Citation

Castleden, Susanna. 1: 500 000 on 1:1 (the Charts That Guided the Wings). 2017.

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