APA

Rayner C., . (1972). When to call the doctor. London: A Mini-Book.

Chicago

Rayner Claire, . 1972. When to call the doctor. London: A Mini-Book.

Harvard

Rayner C., . (1972). When to call the doctor. London: A Mini-Book.

MLA

Rayner Claire, . When to call the doctor. London: A Mini-Book. 1972.