APA

Humphreys S. T., . (1953). A book of trials. London: Heinemann.

Chicago

Humphreys Sir Travers, . 1953. A book of trials. London: Heinemann.

Harvard

Humphreys S. T., . (1953). A book of trials. London: Heinemann.

MLA

Humphreys Sir Travers, . A book of trials. London: Heinemann. 1953.