O. C. Ferrell,Geoffrey Hirt,Linda Ferrell
(4)
Stanley Block/ Geoffrey Hirt/ Bartley Danielsen
(4)
O. C. Ferrell/ Geoffrey Hirt/ Linda Ferrell
(3)
Ashley Tull (EDT)/ Joan B. Hirt (EDT)/ Sue A. Saunders (EDT)
(2)
Jen Hirt (EDT)/ Erin Murphy (EDT)
(2)
John M. (Virginia Polytechnic Institute and State University Levy USA),Sonia A. (University of Georgia Hirt USA),Casey J. (University of Maryland Dawkins USA)
(2)