APA (7th ed.) Citation

HECKLER. (1993). Circumtances unknown. Headline Book Pub.

Chicago Style (17th ed.) Citation

HECKLER. Circumtances Unknown. London: Headline Book Pub, 1993.

MLA (9th ed.) Citation

HECKLER. Circumtances Unknown. Headline Book Pub, 1993.

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