Cita APA (7a ed.)

Heady, S., & O'Donoghue, M. (1999). Rubies: Are a girl' s best friend. Grange Books.

Cita Chicago Style (17a ed.)

Heady, Sue, y Michael O'Donoghue. Rubies: Are a Girl' S Best Friend. London: Grange Books, 1999.

Cita MLA (8a ed.)

Heady, Sue, y Michael O'Donoghue. Rubies: Are a Girl' S Best Friend. Grange Books, 1999.