Dyfyniad APA
Sawyer, W. W. (1970). Introducing mathematics 3: The search for pattern (1a. ed.). Penguin books.
Dyfyniad Arddull Chicago
Sawyer, W. W. Introducing Mathematics 3: The Search for Pattern. 1a. ed. Penguin books, 1970.
Dyfyniad MLA
Sawyer, W. W. Introducing Mathematics 3: The Search for Pattern. 1a. ed. Penguin books, 1970.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.