APA

Hursthouse Rosalind, Open University, . (1978). Introduction to philosophy. Milton Keynes: Open University Press.

Chicago

Hursthouse Rosalind, Open University, . 1978. Introduction to philosophy. Milton Keynes: Open University Press.

Harvard

Hursthouse Rosalind, Open University, . (1978). Introduction to philosophy. Milton Keynes: Open University Press.

MLA

Hursthouse Rosalind, Open University, . Introduction to philosophy. Milton Keynes: Open University Press. 1978.