BURNFORD , H. (1995). QUESTIONS AND ANSWERS EXPLORERS.
Cita Chicago (17th ed.)BURNFORD , HELEN. QUESTIONS AND ANSWERS EXPLORERS. 1995.
Cita MLA (9th ed.)BURNFORD , HELEN. QUESTIONS AND ANSWERS EXPLORERS. 1995.
Atenció: Aquestes cites poden no estar 100% correctes.