APA-viite (7. p.)

Rickard, L. V. (1962). Late Cayugan (upper Silurian) and Helderbergian (lower Devonian) stratrigraphy in New York. University of the State of New York, State Education Dept..

Chicago-viite (17. p.)

Rickard, Lawrence V. Late Cayugan (upper Silurian) and Helderbergian (lower Devonian) Stratrigraphy in New York. Albany: University of the State of New York, State Education Dept., 1962.

MLA-viite (8. p.)

Rickard, Lawrence V. Late Cayugan (upper Silurian) and Helderbergian (lower Devonian) Stratrigraphy in New York. University of the State of New York, State Education Dept., 1962.