Watts, R. G. & Sawyer, E. (1975). Aerodynamics of a knuckleball. American Journal of Physics, 43 (11), 960-963. doi: 10.1119/1.10020
APA ZitierstilWatts, R. G., & Sawyer, E. (1975). Aerodynamics of a knuckleball. American Journal of Physics, 43(11), pp. 960-963.
Chicago ZitierstilWatts, R. G., and E. Sawyer. "Aerodynamics of a Knuckleball." American Journal of Physics 43, no. 11 (1975): 960-963.
MLA ZitierstilWatts, R. G., and E. Sawyer. "Aerodynamics of a Knuckleball." American Journal of Physics 43.11 (1975): 960-963.