Azurin, A. . M. (1991). Heartland / Arnold Molina Azurin. Kalikasan Press.
Cita Chicago (17th ed.)Azurin, Arnold Molina. Heartland / Arnold Molina Azurin. Manila: Kalikasan Press, 1991.
Cita MLA (9th ed.)Azurin, Arnold Molina. Heartland / Arnold Molina Azurin. Kalikasan Press, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.