APA

Hoogstraal H., Clifford C. M. & Keirans J. E. (1973). Argas (Microargas) transversus (Ixodoidea: Argasidae) of Galápagos giant tortoises: Description of the female and nymph. : .

Chicago

Hoogstraal Harry, Clifford Carleton M and Keirans James E. 1973. Argas (Microargas) transversus (Ixodoidea: Argasidae) of Galápagos giant tortoises: Description of the female and nymph. : .

Harvard

Hoogstraal H., Clifford C. M. and Keirans J. E. (1973). Argas (Microargas) transversus (Ixodoidea: Argasidae) of Galápagos giant tortoises: Description of the female and nymph. : .

MLA

Hoogstraal Harry, Clifford Carleton M and Keirans James E. Argas (Microargas) transversus (Ixodoidea: Argasidae) of Galápagos giant tortoises: Description of the female and nymph. : . 1973.