APA

Hendrickson H. T., . (1981). Essential biology. : Harper & Brother Publishers, New York.

Chicago

Hendrickson Herbert T, . 1981. Essential biology. : Harper & Brother Publishers, New York.

Harvard

Hendrickson H. T., . (1981). Essential biology. : Harper & Brother Publishers, New York.

MLA

Hendrickson Herbert T, . Essential biology. : Harper & Brother Publishers, New York. 1981.