Can you keep a secret? [Text] / S. Kinsella ... – London : Transworld publishers, 2003. - 363, [1] p. . . – [n. c.] – ISBN 0-552-77110-4, ISBN 9780552771108 : 0 тг.
Choose Happiness and Begin to Take Control of Your Life [Text] / E. Smith ... – London : Gateway Books, 1984. - 180 p. . . – [n. c.] – ISBN 0-946551-04-9 : 16 tg.