APA (7th ed.) Citation

Haslett, A. W. (1935). Unsolved problems of science / by A.W. Haslett. Macmillan.

Chicago Style (17th ed.) Citation

Haslett, A. W. Unsolved Problems of Science / by A.W. Haslett. Macmillan, 1935.

MLA (9th ed.) Citation

Haslett, A. W. Unsolved Problems of Science / by A.W. Haslett. Macmillan, 1935.

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