APA (7th ed.) Citation

Gollan, J. ;. M., & Garber, J. Challenge. Vol. 3, no. 11. London : Challenge Publications.

Chicago Style (17th ed.) Citation

Gollan, John ; Moran, and Joe Garber. Challenge. Vol. 3, No. 11. London : Challenge Publications.

MLA (8th ed.) Citation

Gollan, John ; Moran, and Joe Garber. Challenge. Vol. 3, No. 11. London : Challenge Publications.

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