Cita APA (7th ed.)
Loflin, B., & Loflin, S. (2009). Texas cacti. Texas A&M University Press.
Cita Chicago (17th ed.)
Loflin, Brian, i Shirley Loflin. Texas Cacti. College Station: Texas A&M University Press, 2009.
Cita MLA (9th ed.)
Loflin, Brian, i Shirley Loflin. Texas Cacti. Texas A&M University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.