APA引文

Harold William Rickett. (1967). Wild flowers of the United States. Vol.2 - P.1. New York: McGraw-Hill.

Trích dẫn kiểu Chicago

Harold William Rickett. Wild Flowers of the United States. Vol.2 - P.1. New York: McGraw-Hill, 1967.

MLA引文

Harold William Rickett. Wild Flowers of the United States. Vol.2 - P.1. New York: McGraw-Hill, 1967.