Following a close reading strategy, the research seeks to discover what the intratextual relations of each selected poem, three by Ingrid Jonker and three by Sylvia Plath, reveal. Flowing from the thematic overlaps that exist between the selected Jonker poems and Plath poems, it explores what similarities or differences in poetic form, the use of poetic devices and content, in other words intratextual relations, can be discovered via a comparison. Given that Jonker and Plath were contemporaries and shared biographical events, and after having considered and compared the intratextual relations of the selected poems, the research seeks to show what similarities or differences can be discovered in the exploration and comparison of the intertextual and extratextual relations of the selected poems. Thus, the thesis’ critical approach includes the close investigation of the structure of each of the selected poems, in order to discover its communication first, before delving into biographical, historical, social, political, and thematic approaches and interpretations. The research reveals that exercises of close reading, with a few exceptions, have not been the main focus in the discussion of either poet’s poetry. In other words, context has, for the most part, been favoured over text and over form. What the research reveals is that there are overlaps in the intratextual, intertextual, and extratextual relations of the selection of poems, but also differences. A comparison of intratextual relations reveals Plath’s formal training in comparison to Jonker’s largely informal training, for example, and that generally Plath was the more disciplined author of the two. The intertextual and extratextual relations of each poem (and how these relations compare) reveal and highlight that the selection of poems is a reflection or sampling of the poets’ ‘own’ voices. It also reveals the development of their maturity as writers and the development of themes across their poetry and collections of poems.