Dyfyniad APA

Seagull Bobby. (2019). Life-Changing Magic of Numbers. Penguin Random House, Virgin Book UK.

Dyfyniad Arddull Chicago

Seagull Bobby. Life-Changing Magic of Numbers. London: Penguin Random House, Virgin Book UK, 2019.

Dyfyniad MLA

Seagull Bobby. Life-Changing Magic of Numbers. Penguin Random House, Virgin Book UK, 2019.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.