APA

Phelan G., Hanneman K. & Shymansky J. (2003). Finding the First Vaccines. Washington: National Geographic Society.

Chicago

Phelan Glen, Hanneman Kristin and Shymansky James. 2003. Finding the First Vaccines. Washington: National Geographic Society.

Harvard

Phelan G., Hanneman K. and Shymansky J. (2003). Finding the First Vaccines. Washington: National Geographic Society.

MLA

Phelan Glen, Hanneman Kristin and Shymansky James. Finding the First Vaccines. Washington: National Geographic Society. 2003.