Cita APA (7th ed.)
Sawyer, W. W. (1970). Introducing mathematics 3: The search for pattern (1a. ed.). Penguin books.
Cita Chicago (17th ed.)
Sawyer, W. W. Introducing Mathematics 3: The Search for Pattern. 1a. ed. Penguin books, 1970.
Cita MLA (9th ed.)
Sawyer, W. W. Introducing Mathematics 3: The Search for Pattern. 1a. ed. Penguin books, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.