Gregory, . P. H. (1973). The microbiology of the atmosphere (2nd ed.). Leonard Hill.
Cita Chicago Style (17a ed.)Gregory, Philip Herries. The Microbiology of the Atmosphere. 2nd ed. Aylesbury: Leonard Hill, 1973.
Cita MLA (9a ed.)Gregory, Philip Herries. The Microbiology of the Atmosphere. 2nd ed. Leonard Hill, 1973.
Precaución: Estas citas no son 100% exactas.