Cita APA (7th ed.)

[Book title inferred from ISBN 0-669-35499-6].

Cita Chicago (17th ed.)

[Book Title Inferred from ISBN 0-669-35499-6].

Cita MLA (9th ed.)

[Book Title Inferred from ISBN 0-669-35499-6].

Atenció: Aquestes cites poden no estar 100% correctes.