Cita APA (7a ed.)
Kennedy, M., & Kopp, S. Understanding Map Projections.
Cita estilo Chicago (17a ed.)
Kennedy, Melita, y Steve Kopp. Understanding Map Projections.
Cita MLA (9a ed.)
Kennedy, Melita, y Steve Kopp. Understanding Map Projections.
警告：這些引文格式不一定是100％准確.