Cite

Fig.6. Branch, leaves, and acorn of Q. Kelloggii, 1.2 natural size. [[Illustrations on page 28 of REPORTS VOL. 6.]

MLA

Fig.6. Branch, Leaves, and Acorn of Q. Kelloggii, 1.2 Natural Size. [[Illustrations on Page 28 of REPORTS VOL. 6.]. 0AD. https://collections.library.yale.edu/catalog/2016595.

APA, 6th edition

Fig.6. Branch, leaves, and acorn of Q. Kelloggii, 1.2 natural size. [[Illustrations on page 28 of REPORTS VOL. 6.]. (0 C.E.). [Relief prints, Wood engravings]. https://collections.library.yale.edu/catalog/2016595.