APA (7th ed.) Citation

Douglas, A. Endurance Test; or, How Clear Grit Won the Day.

Chicago Style (17th ed.) Citation

Douglas, Alan. Endurance Test; or, How Clear Grit Won the Day.

MLA (9th ed.) Citation

Douglas, Alan. Endurance Test; or, How Clear Grit Won the Day.

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