APA (7th ed.) Citation

Higgins, J. (1965). The keys of hell. fawcett gold metal book.

Chicago Style (17th ed.) Citation

Higgins, Jack. The Keys of Hell. [Χ.τ.]: fawcett gold metal book, 1965.

MLA (8th ed.) Citation

Higgins, Jack. The Keys of Hell. fawcett gold metal book, 1965.

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