Robbins, R., & Anderson, S. (1973). Advanced rockcraft. La Siesta Press.
Cita Chicago (17th ed.)Robbins, Royal, i Sheridan Anderson. Advanced Rockcraft. Glendale, Calif.: La Siesta Press, 1973.
Cita MLA (8th ed.)Robbins, Royal, i Sheridan Anderson. Advanced Rockcraft. La Siesta Press, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.