APA (7th ed.) Citation

Heawood, G. L. (1967). The Humanist-Christian frontier / by G.L. Heawood. S.P.C.K..

Chicago Style (17th ed.) Citation

Heawood, G. L. The Humanist-Christian Frontier / by G.L. Heawood. S.P.C.K., 1967.

MLA (9th ed.) Citation

Heawood, G. L. The Humanist-Christian Frontier / by G.L. Heawood. S.P.C.K., 1967.

Warning: These citations may not always be 100% accurate.