APA (7e ed.) Bronvermelding

Hight, D. W. (1966). A concept of limits. Prentice-Hall.

Chicago (17e ed.) Bronvermelding

Hight, Donald W. A Concept of Limits. Englewood Cliffs: Prentice-Hall, 1966.

MLA (9e ed.) Bronvermelding

Hight, Donald W. A Concept of Limits. Prentice-Hall, 1966.