APA (7th ed.) Citation

Sullivan, R. M., & Lucas, S. G. (1999). Pennsylvania's dinosaurs and other Triassic reptiles. Pennsylvania Historical and Museum Comm.

Chicago Style (17th ed.) Citation

Sullivan, Robert M., and Spencer G. Lucas. Pennsylvania's Dinosaurs and Other Triassic Reptiles. Harrisburg, Pa: Pennsylvania Historical and Museum Comm, 1999.

MLA (9th ed.) Citation

Sullivan, Robert M., and Spencer G. Lucas. Pennsylvania's Dinosaurs and Other Triassic Reptiles. Pennsylvania Historical and Museum Comm, 1999.

Warning: These citations may not always be 100% accurate.