APA (7th ed.) Citation

Ambler, E. (1988). The dark frontier. Fontana/Collins.

Chicago Style (17th ed.) Citation

Ambler, Eric. The Dark Frontier. Fontana/Collins, 1988.

MLA (9th ed.) Citation

Ambler, Eric. The Dark Frontier. Fontana/Collins, 1988.

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